20880654 has 16 divisors (see below), whose sum is σ = 42890448. Its totient is φ = 6772032.

The previous prime is 20880647. The next prime is 20880659. The reversal of 20880654 is 45608802.

It is a super-2 number, since 2×20880654² = 872003422935432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880659) 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, 46807 + ... + 47250.

It is an arithmetic number, because the mean of its divisors is an integer number (2680653).

Almost surely, 2^20880654 is an apocalyptic number.

20880654 is an abundant number, since it is smaller than the sum of its proper divisors (22009794).

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

20880654 is a wasteful number, since it uses less digits than its factorization.

20880654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94099.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 20880654 is about 4569.5354249639. The cubic root of 20880654 is about 275.3687790699.

The spelling of 20880654 in words is "twenty million, eight hundred eighty thousand, six hundred fifty-four".