20589172 has 6 divisors (see below), whose sum is σ = 36031058. Its totient is φ = 10294584.

The previous prime is 20589157. The next prime is 20589181. The reversal of 20589172 is 27198502.

It can be written as a sum of positive squares in only one way, i.e., 15085456 + 5503716 = 3884^2 + 2346^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2573643 + ... + 2573650.

Almost surely, 2^20589172 is an apocalyptic number.

It is an amenable number.

20589172 is a deficient number, since it is larger than the sum of its proper divisors (15441886).

20589172 is a wasteful number, since it uses less digits than its factorization.

20589172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5147297 (or 5147295 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 20589172 is about 4537.5292836521. The cubic root of 20589172 is about 274.0814399079.

The spelling of 20589172 in words is "twenty million, five hundred eighty-nine thousand, one hundred seventy-two".