157617420 has 48 divisors (see below), whose sum is σ = 445471488. Its totient is φ = 41636800.

The previous prime is 157617391. The next prime is 157617431. The reversal of 157617420 is 24716751.

157617420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5856 + ... + 18695.

It is an arithmetic number, because the mean of its divisors is an integer number (9280656).

Almost surely, 2^157617420 is an apocalyptic number.

157617420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157617420 is an abundant number, since it is smaller than the sum of its proper divisors (287854068).

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

157617420 is a wasteful number, since it uses less digits than its factorization.

157617420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24670 (or 24668 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 157617420 is about 12554.5776511996. The cubic root of 157617420 is about 540.1753203022.

The spelling of 157617420 in words is "one hundred fifty-seven million, six hundred seventeen thousand, four hundred twenty".