20492732 has 24 divisors (see below), whose sum is σ = 38744496. Its totient is φ = 9427968.

The previous prime is 20492729. The next prime is 20492741. The reversal of 20492732 is 23729402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20492695 and 20492704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29663 + ... + 30345.

It is an arithmetic number, because the mean of its divisors is an integer number (1614354).

Almost surely, 2^20492732 is an apocalyptic number.

It is an amenable number.

20492732 is a deficient number, since it is larger than the sum of its proper divisors (18251764).

20492732 is a wasteful number, since it uses less digits than its factorization.

20492732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20492732 is about 4526.8898815854. The cubic root of 20492732 is about 273.6528361133.

The spelling of 20492732 in words is "twenty million, four hundred ninety-two thousand, seven hundred thirty-two".