20975486 has 16 divisors (see below), whose sum is σ = 36795264. Its totient is φ = 8780184.

The previous prime is 20975453. The next prime is 20975509. The reversal of 20975486 is 68457902.

It is a congruent number.

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, 16820 + ... + 18023.

It is an arithmetic number, because the mean of its divisors is an integer number (2299704).

Almost surely, 2^20975486 is an apocalyptic number.

20975486 is a deficient number, since it is larger than the sum of its proper divisors (15819778).

20975486 is a wasteful number, since it uses less digits than its factorization.

20975486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34895.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 20975486 is about 4579.9002172536. The cubic root of 20975486 is about 275.7850230337.

The spelling of 20975486 in words is "twenty million, nine hundred seventy-five thousand, four hundred eighty-six".