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133688058 = 23731102679
BaseRepresentation
bin1111111011111…
…10101011111010
3100022120001112120
413331332223322
5233211004213
621133222110
73212221050
oct775765372
9308501476
10133688058
11695108a9
1238931936
132190a37a
1413a801d0
15bb0b423
hex7f7eafa

133688058 has 32 divisors (see below), whose sum is σ = 315432960. Its totient is φ = 36964080.

The previous prime is 133688021. The next prime is 133688063. The reversal of 133688058 is 850886331.

It is a super-3 number, since 3×1336880583 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50038 + ... + 52641.

It is an arithmetic number, because the mean of its divisors is an integer number (9857280).

Almost surely, 2133688058 is an apocalyptic number.

133688058 is an abundant number, since it is smaller than the sum of its proper divisors (181744902).

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

133688058 is a wasteful number, since it uses less digits than its factorization.

133688058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102722.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 133688058 is about 11562.3552099043. The cubic root of 133688058 is about 511.3256018501.

The spelling of 133688058 in words is "one hundred thirty-three million, six hundred eighty-eight thousand, fifty-eight".

Divisors: 1 2 3 6 7 14 21 31 42 62 93 186 217 434 651 1302 102679 205358 308037 616074 718753 1437506 2156259 3183049 4312518 6366098 9549147 19098294 22281343 44562686 66844029 133688058