20553796 has 24 divisors (see below), whose sum is σ = 37298520. Its totient is φ = 9902592.

The previous prime is 20553787. The next prime is 20553823. The reversal of 20553796 is 69735502.

It can be written as a sum of positive squares in 4 ways, for example, as 7128900 + 13424896 = 2670^2 + 3664^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16110 + ... + 17338.

It is an arithmetic number, because the mean of its divisors is an integer number (1554105).

Almost surely, 2^20553796 is an apocalyptic number.

It is an amenable number.

20553796 is a deficient number, since it is larger than the sum of its proper divisors (16744724).

20553796 is a wasteful number, since it uses less digits than its factorization.

20553796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 20553796 is about 4533.6294511131. The cubic root of 20553796 is about 273.9243757410.

The spelling of 20553796 in words is "twenty million, five hundred fifty-three thousand, seven hundred ninety-six".