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80038530 = 23451113691
BaseRepresentation
bin1001100010101…
…00101010000010
312120121101020000
410301110222002
5130442213110
611535300430
71661213325
oct461245202
9176541200
1080038530
11411a8150
122297a716
1313774aa0
14a8b67bc
1570601c0
hex4c54a82

80038530 has 160 divisors (see below), whose sum is σ = 253205568. Its totient is φ = 17884800.

The previous prime is 80038493. The next prime is 80038531. The reversal of 80038530 is 3583008.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80038494 and 80038503.

It is not an unprimeable number, because it can be changed into a prime (80038531) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 115485 + ... + 116175.

Almost surely, 280038530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80038530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126602784).

80038530 is an abundant number, since it is smaller than the sum of its proper divisors (173167038).

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

80038530 is a wasteful number, since it uses less digits than its factorization.

80038530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 80038530 is about 8946.4255431988. The cubic root of 80038530 is about 430.9561022110.

The spelling of 80038530 in words is "eighty million, thirty-eight thousand, five hundred thirty".

Divisors: 1 2 3 5 6 9 10 11 13 15 18 22 26 27 30 33 39 45 54 55 65 66 78 81 90 99 110 117 130 135 143 162 165 195 198 234 270 286 297 330 351 390 405 429 495 585 594 691 702 715 810 858 891 990 1053 1170 1287 1382 1430 1485 1755 1782 2073 2106 2145 2574 2970 3455 3510 3861 4146 4290 4455 5265 6219 6435 6910 7601 7722 8910 8983 10365 10530 11583 12438 12870 15202 17966 18657 19305 20730 22803 23166 26949 31095 37314 38005 38610 44915 45606 53898 55971 57915 62190 68409 76010 80847 89830 93285 98813 111942 114015 115830 134745 136818 161694 186570 197626 205227 228030 242541 269490 279855 296439 342045 404235 410454 485082 494065 559710 592878 615681 684090 727623 808470 889317 988130 1026135 1212705 1231362 1455246 1482195 1778634 2052270 2425410 2667951 2964390 3078405 3638115 4446585 5335902 6156810 7276230 8003853 8893170 13339755 16007706 26679510 40019265 80038530