20677224 has 16 divisors (see below), whose sum is σ = 51693120. Its totient is φ = 6892400.

The previous prime is 20677213. The next prime is 20677247. The reversal of 20677224 is 42277602.

It is a junction number, because it is equal to n+sod(n) for n = 20677191 and 20677200.

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 3 ways as a sum of consecutive naturals, for example, 430752 + ... + 430799.

It is an arithmetic number, because the mean of its divisors is an integer number (3230820).

Almost surely, 2^20677224 is an apocalyptic number.

20677224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20677224 is an abundant number, since it is smaller than the sum of its proper divisors (31015896).

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

20677224 is a wasteful number, since it uses less digits than its factorization.

20677224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861560 (or 861556 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 20677224 is about 4547.2215692662. The cubic root of 20677224 is about 274.4715980183.

The spelling of 20677224 in words is "twenty million, six hundred seventy-seven thousand, two hundred twenty-four".