20677328 has 40 divisors (see below), whose sum is σ = 46003008. Its totient is φ = 8819712.

The previous prime is 20677313. The next prime is 20677331. The reversal of 20677328 is 82377602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39275 + ... + 39797.

Almost surely, 2^20677328 is an apocalyptic number.

20677328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20677328 is an abundant number, since it is smaller than the sum of its proper divisors (25325680).

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

20677328 is a wasteful number, since it uses less digits than its factorization.

20677328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 20677328 is about 4547.2330048063. The cubic root of 20677328 is about 274.4720581864.

The spelling of 20677328 in words is "twenty million, six hundred seventy-seven thousand, three hundred twenty-eight".