20876680 has 64 divisors (see below), whose sum is σ = 54276480. Its totient is φ = 7142400.

The previous prime is 20876657. The next prime is 20876683. The reversal of 20876680 is 8667802.

It is not an unprimeable number, because it can be changed into a prime (20876683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6085 + ... + 8875.

It is an arithmetic number, because the mean of its divisors is an integer number (848070).

Almost surely, 2^20876680 is an apocalyptic number.

20876680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20876680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27138240).

20876680 is an abundant number, since it is smaller than the sum of its proper divisors (33399800).

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

20876680 is a wasteful number, since it uses less digits than its factorization.

20876680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830 (or 2826 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 20876680 is about 4569.1005679455. The cubic root of 20876680 is about 275.3513085929.

The spelling of 20876680 in words is "twenty million, eight hundred seventy-six thousand, six hundred eighty".