20740732 has 24 divisors (see below), whose sum is σ = 37185120. Its totient is φ = 10119360.

The previous prime is 20740729. The next prime is 20740747. The reversal of 20740732 is 23704702.

It is a junction number, because it is equal to n+sod(n) for n = 20740697 and 20740706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40494 + ... + 41002.

It is an arithmetic number, because the mean of its divisors is an integer number (1549380).

Almost surely, 2^20740732 is an apocalyptic number.

It is an amenable number.

20740732 is a deficient number, since it is larger than the sum of its proper divisors (16444388).

20740732 is a wasteful number, since it uses less digits than its factorization.

20740732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 20740732 is about 4554.1993807913. The cubic root of 20740732 is about 274.7523147244.

The spelling of 20740732 in words is "twenty million, seven hundred forty thousand, seven hundred thirty-two".