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157038078 = 23171981031
BaseRepresentation
bin10010101110000…
…11010111111110
3101221111100202010
421113003113332
5310200204303
623325512050
73614541651
oct1127032776
9357440663
10157038078
118070a03a
1244712626
13266c4552
1416bdb898
15dbbec03
hex95c35fe

157038078 has 32 divisors (see below), whose sum is σ = 350058240. Its totient is φ = 46673280.

The previous prime is 157038071. The next prime is 157038083. The reversal of 157038078 is 870830751.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157038071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38578 + ... + 42453.

It is an arithmetic number, because the mean of its divisors is an integer number (10939320).

Almost surely, 2157038078 is an apocalyptic number.

157038078 is an abundant number, since it is smaller than the sum of its proper divisors (193020162).

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

157038078 is a wasteful number, since it uses less digits than its factorization.

157038078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81072.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 157038078 is about 12531.4834716405. The cubic root of 157038078 is about 539.5126810683.

The spelling of 157038078 in words is "one hundred fifty-seven million, thirty-eight thousand, seventy-eight".

Divisors: 1 2 3 6 17 19 34 38 51 57 102 114 323 646 969 1938 81031 162062 243093 486186 1377527 1539589 2755054 3079178 4132581 4618767 8265162 9237534 26173013 52346026 78519039 157038078