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157055190 = 23511294637
BaseRepresentation
bin10010101110001…
…11100011010110
3101221112020012220
421113013203112
5310201231230
623330123210
73614642565
oct1127074326
9357466186
10157055190
1180720986
1244720506
13266cc286
1416c03bdc
15dbc4d10
hex95c78d6

157055190 has 32 divisors (see below), whose sum is σ = 377347680. Its totient is φ = 41835264.

The previous prime is 157055179. The next prime is 157055191. The reversal of 157055190 is 91550751.

It is a super-2 number, since 2×1570551902 = 49332665411872200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157055191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31552 + ... + 36188.

It is an arithmetic number, because the mean of its divisors is an integer number (11792115).

Almost surely, 2157055190 is an apocalyptic number.

157055190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157055190 is an abundant number, since it is smaller than the sum of its proper divisors (220292490).

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

157055190 is a wasteful number, since it uses less digits than its factorization.

157055190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776.

The product of its (nonzero) digits is 7875, while the sum is 33.

The square root of 157055190 is about 12532.1662133886. The cubic root of 157055190 is about 539.5322767524.

The spelling of 157055190 in words is "one hundred fifty-seven million, fifty-five thousand, one hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 1129 2258 3387 4637 5645 6774 9274 11290 13911 16935 23185 27822 33870 46370 69555 139110 5235173 10470346 15705519 26175865 31411038 52351730 78527595 157055190