20057712 has 20 divisors (see below), whose sum is σ = 51815880. Its totient is φ = 6685888.

The previous prime is 20057683. The next prime is 20057717. The reversal of 20057712 is 21775002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20057717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208887 + ... + 208982.

It is an arithmetic number, because the mean of its divisors is an integer number (2590794).

Almost surely, 2^20057712 is an apocalyptic number.

It is an amenable number.

20057712 is an abundant number, since it is smaller than the sum of its proper divisors (31758168).

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

20057712 is a wasteful number, since it uses less digits than its factorization.

20057712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417880 (or 417874 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 20057712 is about 4478.5837046995. The cubic root of 20057712 is about 271.7026017093.

The spelling of 20057712 in words is "twenty million, fifty-seven thousand, seven hundred twelve".