20976552 has 96 divisors (see below), whose sum is σ = 60652800. Its totient is φ = 6534528.

The previous prime is 20976547. The next prime is 20976563. The reversal of 20976552 is 25567902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87649 + ... + 87887.

It is an arithmetic number, because the mean of its divisors is an integer number (631800).

Almost surely, 2^20976552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20976552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30326400).

20976552 is an abundant number, since it is smaller than the sum of its proper divisors (39676248).

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

20976552 is a wasteful number, since it uses less digits than its factorization.

20976552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 20976552 is about 4580.0165938564. The cubic root of 20976552 is about 275.7896948659.

It can be divided in two parts, 20976 and 552, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 20976552 in words is "twenty million, nine hundred seventy-six thousand, five hundred fifty-two".