20677204 has 6 divisors (see below), whose sum is σ = 36185114. Its totient is φ = 10338600.

The previous prime is 20677201. The next prime is 20677213. The reversal of 20677204 is 40277602.

It can be written as a sum of positive squares in only one way, i.e., 19377604 + 1299600 = 4402^2 + 1140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20677201) by changing a digit.

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 as a sum of consecutive naturals, namely, 2584647 + ... + 2584654.

Almost surely, 2^20677204 is an apocalyptic number.

It is an amenable number.

20677204 is a deficient number, since it is larger than the sum of its proper divisors (15507910).

20677204 is a wasteful number, since it uses less digits than its factorization.

20677204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5169305 (or 5169303 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20677204 is about 4547.2193701206. The cubic root of 20677204 is about 274.4715095242.

The spelling of 20677204 in words is "twenty million, six hundred seventy-seven thousand, two hundred four".