20424008 has 16 divisors (see below), whose sum is σ = 41776560. Its totient is φ = 9283600.

The previous prime is 20423989. The next prime is 20424043. The reversal of 20424008 is 80042402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115958 + ... + 116133.

It is an arithmetic number, because the mean of its divisors is an integer number (2611035).

Almost surely, 2^20424008 is an apocalyptic number.

It is an amenable number.

20424008 is an abundant number, since it is smaller than the sum of its proper divisors (21352552).

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

20424008 is a wasteful number, since it uses less digits than its factorization.

20424008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232108 (or 232104 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 20424008 is about 4519.2928650398. The cubic root of 20424008 is about 273.3465880280.

The spelling of 20424008 in words is "twenty million, four hundred twenty-four thousand, eight".