20624668 has 12 divisors (see below), whose sum is σ = 36169000. Its totient is φ = 10290672.

The previous prime is 20624663. The next prime is 20624693. The reversal of 20624668 is 86642602.

It is a super-2 number, since 2×20624668² = 850753860220448, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3171 + ... + 7162.

Almost surely, 2^20624668 is an apocalyptic number.

It is an amenable number.

20624668 is a deficient number, since it is larger than the sum of its proper divisors (15544332).

20624668 is a wasteful number, since it uses less digits than its factorization.

20624668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10836 (or 10834 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 20624668 is about 4541.4389790021. The cubic root of 20624668 is about 274.2388561343.

The spelling of 20624668 in words is "twenty million, six hundred twenty-four thousand, six hundred sixty-eight".