20157400 has 24 divisors (see below), whose sum is σ = 46866420. Its totient is φ = 8062880.

The previous prime is 20157391. The next prime is 20157413. The reversal of 20157400 is 475102.

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 5 ways as a sum of consecutive naturals, for example, 50194 + ... + 50593.

Almost surely, 2^20157400 is an apocalyptic number.

20157400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20157400 is an abundant number, since it is smaller than the sum of its proper divisors (26709020).

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

20157400 is a wasteful number, since it uses less digits than its factorization.

20157400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100803 (or 100794 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20157400 is about 4489.6993217809. The cubic root of 20157400 is about 272.1519839767.

The spelling of 20157400 in words is "twenty million, one hundred fifty-seven thousand, four hundred".