20953204 has 6 divisors (see below), whose sum is σ = 36668114. Its totient is φ = 10476600.

The previous prime is 20953199. The next prime is 20953223. The reversal of 20953204 is 40235902.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12531600 + 8421604 = 3540^2 + 2902^2 .

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, 2619147 + ... + 2619154.

Almost surely, 2^20953204 is an apocalyptic number.

It is an amenable number.

20953204 is a deficient number, since it is larger than the sum of its proper divisors (15714910).

20953204 is a wasteful number, since it uses less digits than its factorization.

20953204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238305 (or 5238303 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20953204 is about 4577.4669851349. The cubic root of 20953204 is about 275.6873340917.

The spelling of 20953204 in words is "twenty million, nine hundred fifty-three thousand, two hundred four".