20995024 has 10 divisors (see below), whose sum is σ = 40677890. Its totient is φ = 10497504.

The previous prime is 20994989. The next prime is 20995031. The reversal of 20995024 is 42059902.

It can be written as a sum of positive squares in only one way, i.e., 19713600 + 1281424 = 4440^2 + 1132^2 .

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, 656079 + ... + 656110.

It is an arithmetic number, because the mean of its divisors is an integer number (4067789).

Almost surely, 2^20995024 is an apocalyptic number.

It is an amenable number.

20995024 is a deficient number, since it is larger than the sum of its proper divisors (19682866).

20995024 is a wasteful number, since it uses less digits than its factorization.

20995024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312197 (or 1312191 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 20995024 is about 4582.0327366792. The cubic root of 20995024 is about 275.8706247950.

The spelling of 20995024 in words is "twenty million, nine hundred ninety-five thousand, twenty-four".