20057136 has 40 divisors (see below), whose sum is σ = 56526144. Its totient is φ = 6077760.

The previous prime is 20057131. The next prime is 20057137. The reversal of 20057136 is 63175002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20057131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18466 + ... + 19521.

Almost surely, 2^20057136 is an apocalyptic number.

It is an amenable number.

20057136 is an abundant number, since it is smaller than the sum of its proper divisors (36469008).

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

20057136 is a wasteful number, since it uses less digits than its factorization.

20057136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38009 (or 38003 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 20057136 is about 4478.5193981940. The cubic root of 20057136 is about 271.7000008444.

The spelling of 20057136 in words is "twenty million, fifty-seven thousand, one hundred thirty-six".