20412824 has 8 divisors (see below), whose sum is σ = 38274060. Its totient is φ = 10206408.

The previous prime is 20412817. The next prime is 20412871. The reversal of 20412824 is 42821402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20412824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275794 + ... + 1275809.

Almost surely, 2^20412824 is an apocalyptic number.

It is an amenable number.

20412824 is a deficient number, since it is larger than the sum of its proper divisors (17861236).

20412824 is a wasteful number, since it uses less digits than its factorization.

20412824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551609 (or 2551605 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 20412824 is about 4518.0553338798. The cubic root of 20412824 is about 273.2966848875.

The spelling of 20412824 in words is "twenty million, four hundred twelve thousand, eight hundred twenty-four".