20976832 has 56 divisors (see below), whose sum is σ = 43809920. Its totient is φ = 9953280.

The previous prime is 20976821. The next prime is 20976833. The reversal of 20976832 is 23867902.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 20976832 = 120³ + 268³ = 204³ + 232³.

It is a junction number, because it is equal to n+sod(n) for n = 20976791 and 20976800.

It is not an unprimeable number, because it can be changed into a prime (20976833) 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, 192394 + ... + 192502.

It is an arithmetic number, because the mean of its divisors is an integer number (782320).

Almost surely, 2^20976832 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 20976832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21904960).

20976832 is an abundant number, since it is smaller than the sum of its proper divisors (22833088).

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

20976832 is a wasteful number, since it uses less digits than its factorization.

20976832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 20976832 is about 4580.0471613292. The cubic root of 20976832 is about 275.7909219625.

The spelling of 20976832 in words is "twenty million, nine hundred seventy-six thousand, eight hundred thirty-two".