20957132 has 24 divisors (see below), whose sum is σ = 42492576. Its totient is φ = 8857728.

The previous prime is 20957129. The next prime is 20957161. The reversal of 20957132 is 23175902.

It is a junction number, because it is equal to n+sod(n) for n = 20957095 and 20957104.

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, 3083 + ... + 7170.

It is an arithmetic number, because the mean of its divisors is an integer number (1770524).

Almost surely, 2^20957132 is an apocalyptic number.

It is an amenable number.

20957132 is an abundant number, since it is smaller than the sum of its proper divisors (21535444).

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

20957132 is a wasteful number, since it uses less digits than its factorization.

20957132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10337 (or 10335 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 20957132 is about 4577.8960232841. The cubic root of 20957132 is about 275.7045602907.

The spelling of 20957132 in words is "twenty million, nine hundred fifty-seven thousand, one hundred thirty-two".