20677884 has 24 divisors (see below), whose sum is σ = 48467328. Its totient is φ = 6861360.

The previous prime is 20677859. The next prime is 20677903. The reversal of 20677884 is 48877602.

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, 1072 + ... + 6519.

It is an arithmetic number, because the mean of its divisors is an integer number (2019472).

Almost surely, 2^20677884 is an apocalyptic number.

It is an amenable number.

20677884 is an abundant number, since it is smaller than the sum of its proper divisors (27789444).

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

20677884 is a wasteful number, since it uses less digits than its factorization.

20677884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7825 (or 7823 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 20677884 is about 4547.2941404752. The cubic root of 20677884 is about 274.4745182898.

The spelling of 20677884 in words is "twenty million, six hundred seventy-seven thousand, eight hundred eighty-four".