20942932 has 6 divisors (see below), whose sum is σ = 36650138. Its totient is φ = 10471464.

The previous prime is 20942917. The next prime is 20942951. The reversal of 20942932 is 23924902.

It can be written as a sum of positive squares in only one way, i.e., 10982596 + 9960336 = 3314^2 + 3156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20942894 and 20942903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2617863 + ... + 2617870.

Almost surely, 2^20942932 is an apocalyptic number.

It is an amenable number.

20942932 is a deficient number, since it is larger than the sum of its proper divisors (15707206).

20942932 is a wasteful number, since it uses less digits than its factorization.

20942932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5235737 (or 5235735 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20942932 is about 4576.3448296648. The cubic root of 20942932 is about 275.6422761747.

The spelling of 20942932 in words is "twenty million, nine hundred forty-two thousand, nine hundred thirty-two".