20393552 has 20 divisors (see below), whose sum is σ = 40259700. Its totient is φ = 10003968.

The previous prime is 20393521. The next prime is 20393579. The reversal of 20393552 is 25539302.

It can be written as a sum of positive squares in 2 ways, for example, as 12418576 + 7974976 = 3524^2 + 2824^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11177 + ... + 12872.

It is an arithmetic number, because the mean of its divisors is an integer number (2012985).

Almost surely, 2^20393552 is an apocalyptic number.

It is an amenable number.

20393552 is a deficient number, since it is larger than the sum of its proper divisors (19866148).

20393552 is a wasteful number, since it uses less digits than its factorization.

20393552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24110 (or 24104 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 20393552 is about 4515.9220542432. The cubic root of 20393552 is about 273.2106502111.

The spelling of 20393552 in words is "twenty million, three hundred ninety-three thousand, five hundred fifty-two".