20952728 has 16 divisors (see below), whose sum is σ = 39345000. Its totient is φ = 10460736.

The previous prime is 20952719. The next prime is 20952731. The reversal of 20952728 is 82725902.

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, 5348 + ... + 8396.

Almost surely, 2^20952728 is an apocalyptic number.

It is an amenable number.

20952728 is a deficient number, since it is larger than the sum of its proper divisors (18392272).

20952728 is a wasteful number, since it uses less digits than its factorization.

20952728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914 (or 3910 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 20952728 is about 4577.4149910184. The cubic root of 20952728 is about 275.6852464529.

The spelling of 20952728 in words is "twenty million, nine hundred fifty-two thousand, seven hundred twenty-eight".