157912740 has 120 divisors (see below), whose sum is σ = 500556672. Its totient is φ = 41670720.

The previous prime is 157912739. The next prime is 157912753. The reversal of 157912740 is 47219751.

It is a happy number.

157912740 is a `hidden beast` number, since 1 + 579 + 12 + 74 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 157912695 and 157912704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 172885 + ... + 173795.

Almost surely, 2^157912740 is an apocalyptic number.

157912740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157912740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250278336).

157912740 is an abundant number, since it is smaller than the sum of its proper divisors (342643932).

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

157912740 is a wasteful number, since it uses less digits than its factorization.

157912740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 157912740 is about 12566.3335941714. Note that the first 3 decimals coincide. The cubic root of 157912740 is about 540.5124764533.

The spelling of 157912740 in words is "one hundred fifty-seven million, nine hundred twelve thousand, seven hundred forty".