20912432 has 20 divisors (see below), whose sum is σ = 41206440. Its totient is φ = 10278528.

The previous prime is 20912417. The next prime is 20912453. The reversal of 20912432 is 23421902.

It is a junction number, because it is equal to n+sod(n) for n = 20912398 and 20912407.

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, 10133 + ... + 12020.

It is an arithmetic number, because the mean of its divisors is an integer number (2060322).

Almost surely, 2^20912432 is an apocalyptic number.

It is an amenable number.

20912432 is a deficient number, since it is larger than the sum of its proper divisors (20294008).

20912432 is a wasteful number, since it uses less digits than its factorization.

20912432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22220 (or 22214 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20912432 is about 4573.0112617399. The cubic root of 20912432 is about 275.5084016704.

The spelling of 20912432 in words is "twenty million, nine hundred twelve thousand, four hundred thirty-two".