20624472 has 48 divisors (see below), whose sum is σ = 60938280. Its totient is φ = 6249600.

The previous prime is 20624467. The next prime is 20624479. The reversal of 20624472 is 27442602.

It is a happy number.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12229 + ... + 13812.

Almost surely, 2^20624472 is an apocalyptic number.

20624472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20624472 is an abundant number, since it is smaller than the sum of its proper divisors (40313808).

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

20624472 is a wasteful number, since it uses less digits than its factorization.

20624472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26064 (or 26057 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 20624472 is about 4541.4173998874. The cubic root of 20624472 is about 274.2379874175.

The spelling of 20624472 in words is "twenty million, six hundred twenty-four thousand, four hundred seventy-two".