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133728981870 = 23511894553251
BaseRepresentation
bin111110010001011011…
…1100101001101101110
3110210011210200011002110
41330202313211031232
54142334104404440
6141233444104450
712442633406421
oct1744267451556
9423153604073
10133728981870
1151794584430
1221b01695126
13c7c2604b93
1466888319b8
15372a402080
hex1f22de536e

133728981870 has 64 divisors (see below), whose sum is σ = 354060875520. Its totient is φ = 32054880000.

The previous prime is 133728981839. The next prime is 133728981901. The reversal of 133728981870 is 78189827331.

It is an interprime number because it is at equal distance from previous prime (133728981839) and next prime (133728981901).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133728981870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2247256 + ... + 2305995.

It is an arithmetic number, because the mean of its divisors is an integer number (5532201180).

Almost surely, 2133728981870 is an apocalyptic number.

133728981870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133728981870 is an abundant number, since it is smaller than the sum of its proper divisors (220331893650).

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

133728981870 is a wasteful number, since it uses less digits than its factorization.

133728981870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553361.

The product of its (nonzero) digits is 4064256, while the sum is 57.

The spelling of 133728981870 in words is "one hundred thirty-three billion, seven hundred twenty-eight million, nine hundred eighty-one thousand, eight hundred seventy".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 89 110 165 178 267 330 445 534 890 979 1335 1958 2670 2937 4895 5874 9790 14685 29370 4553251 9106502 13659753 22766255 27319506 45532510 50085761 68298765 100171522 136597530 150257283 250428805 300514566 405239339 500857610 751286415 810478678 1215718017 1502572830 2026196695 2431436034 4052393390 4457632729 6078590085 8915265458 12157180170 13372898187 22288163645 26745796374 44576327290 66864490935 133728981870