157057420 has 48 divisors (see below), whose sum is σ = 373897440. Its totient is φ = 54936576.

The previous prime is 157057399. The next prime is 157057421. The reversal of 157057420 is 24750751.

It is not an unprimeable number, because it can be changed into a prime (157057421) by changing a digit.

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, 10957 + ... + 20836.

It is an arithmetic number, because the mean of its divisors is an integer number (7789530).

Almost surely, 2^157057420 is an apocalyptic number.

157057420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157057420 is an abundant number, since it is smaller than the sum of its proper divisors (216840020).

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

157057420 is a wasteful number, since it uses less digits than its factorization.

157057420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31834 (or 31832 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 157057420 is about 12532.2551841239. The cubic root of 157057420 is about 539.5348303160.

The spelling of 157057420 in words is "one hundred fifty-seven million, fifty-seven thousand, four hundred twenty".