20876772 has 24 divisors (see below), whose sum is σ = 55671616. Its totient is φ = 5964768.

The previous prime is 20876771. The next prime is 20876783. The reversal of 20876772 is 27767802.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20876772.

It is not an unprimeable number, because it can be changed into a prime (20876771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124183 + ... + 124350.

Almost surely, 2^20876772 is an apocalyptic number.

It is an amenable number.

20876772 is an abundant number, since it is smaller than the sum of its proper divisors (34794844).

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

20876772 is a wasteful number, since it uses less digits than its factorization.

20876772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248547 (or 248545 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 20876772 is about 4569.1106355614. The cubic root of 20876772 is about 275.3517130679.

The spelling of 20876772 in words is "twenty million, eight hundred seventy-six thousand, seven hundred seventy-two".