20952388 has 12 divisors (see below), whose sum is σ = 37045372. Its totient is φ = 10368000.

The previous prime is 20952377. The next prime is 20952401. The reversal of 20952388 is 88325902.

It can be written as a sum of positive squares in 2 ways, for example, as 6874884 + 14077504 = 2622^2 + 3752^2 .

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, 26613 + ... + 27388.

Almost surely, 2^20952388 is an apocalyptic number.

It is an amenable number.

20952388 is a deficient number, since it is larger than the sum of its proper divisors (16092984).

20952388 is a wasteful number, since it uses less digits than its factorization.

20952388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54102 (or 54100 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 20952388 is about 4577.3778520022. The cubic root of 20952388 is about 275.6837552630.

The spelling of 20952388 in words is "twenty million, nine hundred fifty-two thousand, three hundred eighty-eight".