20876736 has 56 divisors (see below), whose sum is σ = 55595520. Its totient is φ = 6913792.

The previous prime is 20876699. The next prime is 20876743. The reversal of 20876736 is 63767802.

It is a junction number, because it is equal to n+sod(n) for n = 20876694 and 20876703.

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, 43345 + ... + 43823.

Almost surely, 2^20876736 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 20876736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27797760).

20876736 is an abundant number, since it is smaller than the sum of its proper divisors (34718784).

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

20876736 is a wasteful number, since it uses less digits than its factorization.

20876736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 20876736 is about 4569.1066960622. The cubic root of 20876736 is about 275.3515547952.

It can be divided in two parts, 20876 and 736, that added together give a palindrome (21612).

The spelling of 20876736 in words is "twenty million, eight hundred seventy-six thousand, seven hundred thirty-six".