20913132 has 24 divisors (see below), whose sum is σ = 48945456. Its totient is φ = 6949888.

The previous prime is 20913083. The next prime is 20913133. The reversal of 20913132 is 23131902.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20913099 and 20913108.

It is not an unprimeable number, because it can be changed into a prime (20913133) 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, 1768 + ... + 6704.

It is an arithmetic number, because the mean of its divisors is an integer number (2039394).

Almost surely, 2^20913132 is an apocalyptic number.

It is an amenable number.

20913132 is an abundant number, since it is smaller than the sum of its proper divisors (28032324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20913132 is a wasteful number, since it uses less digits than its factorization.

20913132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297 (or 5295 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 20913132 is about 4573.0877971016. The cubic root of 20913132 is about 275.5114756590.

The spelling of 20913132 in words is "twenty million, nine hundred thirteen thousand, one hundred thirty-two".