20057972 has 12 divisors (see below), whose sum is σ = 38292576. Its totient is φ = 9117240.

The previous prime is 20057971. The next prime is 20057981. The reversal of 20057972 is 27975002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20057971) 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, 227888 + ... + 227975.

It is an arithmetic number, because the mean of its divisors is an integer number (3191048).

Almost surely, 2^20057972 is an apocalyptic number.

20057972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20057972 is a deficient number, since it is larger than the sum of its proper divisors (18234604).

20057972 is a wasteful number, since it uses less digits than its factorization.

20057972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455878 (or 455876 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 20057972 is about 4478.6127316391. The cubic root of 20057972 is about 271.7037756945.

The spelling of 20057972 in words is "twenty million, fifty-seven thousand, nine hundred seventy-two".