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134257678980 = 22352237627983
BaseRepresentation
bin111110100001001100…
…0011001101010000100
3110211112122111202011220
41331002120121222010
54144424431211410
6141402132000340
712462013304415
oct1750230315204
9424478452156
10134257678980
1151a35a61397
122202a7600b0
13c877cc6bc9
1466d8b3780c
15375ba38070
hex1f42619a84

134257678980 has 24 divisors (see below), whose sum is σ = 375921501312. Its totient is φ = 35802047712.

The previous prime is 134257678957. The next prime is 134257678981. The reversal of 134257678980 is 89876752431.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 2237627983 = 134257678980 / (1 + 3 + 4 + 2 + 5 + 7 + 6 + 7 + 8 + 9 + 8 + 0).

It is not an unprimeable number, because it can be changed into a prime (134257678981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118813932 + ... + 1118814051.

It is an arithmetic number, because the mean of its divisors is an integer number (15663395888).

It is a 1-persistent number, because it is pandigital, but 2⋅134257678980 = 268515357960 is not.

Almost surely, 2134257678980 is an apocalyptic number.

134257678980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134257678980 is an abundant number, since it is smaller than the sum of its proper divisors (241663822332).

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

134257678980 is a wasteful number, since it uses less digits than its factorization.

134257678980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237627995 (or 2237627993 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 134257678980 in words is "one hundred thirty-four billion, two hundred fifty-seven million, six hundred seventy-eight thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 2237627983 4475255966 6712883949 8950511932 11188139915 13425767898 22376279830 26851535796 33564419745 44752559660 67128839490 134257678980