157508440 has 32 divisors (see below), whose sum is σ = 357540480. Its totient is φ = 62444032.

The previous prime is 157508431. The next prime is 157508453. The reversal of 157508440 is 44805751.

It is a junction number, because it is equal to n+sod(n) for n = 157508396 and 157508405.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 12904 + ... + 21943.

It is an arithmetic number, because the mean of its divisors is an integer number (11173140).

Almost surely, 2^157508440 is an apocalyptic number.

157508440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157508440 is an abundant number, since it is smaller than the sum of its proper divisors (200032040).

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

157508440 is a wasteful number, since it uses less digits than its factorization.

157508440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34971 (or 34967 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 157508440 is about 12550.2366511552. The cubic root of 157508440 is about 540.0507954047.

The spelling of 157508440 in words is "one hundred fifty-seven million, five hundred eight thousand, four hundred forty".