20938532 has 24 divisors (see below), whose sum is σ = 38871840. Its totient is φ = 9840960.

The previous prime is 20938531. The next prime is 20938537. The reversal of 20938532 is 23583902.

It is not an unprimeable number, because it can be changed into a prime (20938531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9407 + ... + 11417.

It is an arithmetic number, because the mean of its divisors is an integer number (1619660).

Almost surely, 2^20938532 is an apocalyptic number.

It is an amenable number.

20938532 is a deficient number, since it is larger than the sum of its proper divisors (17933308).

20938532 is a wasteful number, since it uses less digits than its factorization.

20938532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171 (or 2169 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 20938532 is about 4575.8640714077. The cubic root of 20938532 is about 275.6229711579.

The spelling of 20938532 in words is "twenty million, nine hundred thirty-eight thousand, five hundred thirty-two".