20975276 has 24 divisors (see below), whose sum is σ = 42371616. Its totient is φ = 8899200.

The previous prime is 20975261. The next prime is 20975281. The reversal of 20975276 is 67257902.

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, 881 + ... + 6536.

It is an arithmetic number, because the mean of its divisors is an integer number (1765484).

Almost surely, 2^20975276 is an apocalyptic number.

It is an amenable number.

20975276 is an abundant number, since it is smaller than the sum of its proper divisors (21396340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20975276 is a wasteful number, since it uses less digits than its factorization.

20975276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7529 (or 7527 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 20975276 is about 4579.8772909326. The cubic root of 20975276 is about 275.7841026728.

The spelling of 20975276 in words is "twenty million, nine hundred seventy-five thousand, two hundred seventy-six".