20432408 has 32 divisors (see below), whose sum is σ = 39560400. Its totient is φ = 9888768.

The previous prime is 20432407. The next prime is 20432437. The reversal of 20432408 is 80423402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34160 + ... + 34752.

Almost surely, 2^20432408 is an apocalyptic number.

It is an amenable number.

20432408 is a deficient number, since it is larger than the sum of its proper divisors (19127992).

20432408 is a wasteful number, since it uses less digits than its factorization.

20432408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 20432408 is about 4520.2221184362. Note that the first 3 decimals coincide. The cubic root of 20432408 is about 273.3840569490.

The spelling of 20432408 in words is "twenty million, four hundred thirty-two thousand, four hundred eight".