20407932 has 36 divisors (see below), whose sum is σ = 52362856. Its totient is φ = 6700320.

The previous prime is 20407921. The next prime is 20407987. The reversal of 20407932 is 23970402.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 20407896 and 20407905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1819 + ... + 6642.

Almost surely, 2^20407932 is an apocalyptic number.

It is an amenable number.

20407932 is an abundant number, since it is smaller than the sum of its proper divisors (31954924).

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

20407932 is a wasteful number, since it uses less digits than its factorization.

20407932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8538 (or 8533 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20407932 is about 4517.5139180749. The cubic root of 20407932 is about 273.2748509952.

The spelling of 20407932 in words is "twenty million, four hundred seven thousand, nine hundred thirty-two".