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12874635990 = 2335151457691
BaseRepresentation
bin10111111110110001…
…10101101011010110
31020020020220021101000
423333120311223112
5202331401322430
65525312044130
7634021412616
oct137730655326
936206807330
1012874635990
11550743a637
1225b3833646
1312a241a408
148a1c54a46
1550543be60
hex2ff635ad6

12874635990 has 128 divisors (see below), whose sum is σ = 34685475840. Its totient is φ = 3398112000.

The previous prime is 12874635973. The next prime is 12874636003. The reversal of 12874635990 is 9953647821.

12874635990 is a `hidden beast` number, since 1 + 2 + 8 + 7 + 46 + 3 + 599 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18631545 + ... + 18632235.

It is an arithmetic number, because the mean of its divisors is an integer number (270980280).

It is a 1-persistent number, because it is pandigital, but 2⋅12874635990 = 25749271980 is not.

Almost surely, 212874635990 is an apocalyptic number.

12874635990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12874635990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17342737920).

12874635990 is an abundant number, since it is smaller than the sum of its proper divisors (21810839850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12874635990 is a wasteful number, since it uses less digits than its factorization.

12874635990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315 (or 1309 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 12874635990 in words is "twelve billion, eight hundred seventy-four million, six hundred thirty-five thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 151 270 302 453 457 691 755 906 914 1359 1371 1382 1510 2073 2265 2285 2718 2742 3455 4077 4113 4146 4530 4570 6219 6795 6855 6910 8154 8226 10365 12339 12438 13590 13710 18657 20385 20565 20730 24678 31095 37314 40770 41130 61695 62190 69007 93285 104341 123390 138014 186570 207021 208682 313023 315787 345035 414042 521705 621063 626046 631574 690070 939069 947361 1035105 1043410 1242126 1565115 1578935 1863189 1878138 1894722 2070210 2817207 2842083 3105315 3130230 3157870 3726378 4695345 4736805 5634414 5684166 6210630 8526249 9315945 9390690 9473610 14086035 14210415 17052498 18631890 28172070 28420830 42631245 47683837 85262490 95367674 143051511 238419185 286103022 429154533 476838370 715257555 858309066 1287463599 1430515110 2145772665 2574927198 4291545330 6437317995 12874635990