20956032 has 48 divisors (see below), whose sum is σ = 60306480. Its totient is φ = 6984960.

The previous prime is 20956021. The next prime is 20956051. The reversal of 20956032 is 23065902.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 20955987 and 20956005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7944 + ... + 10247.

It is an arithmetic number, because the mean of its divisors is an integer number (1256385).

Almost surely, 2^20956032 is an apocalyptic number.

It is an amenable number.

20956032 is an abundant number, since it is smaller than the sum of its proper divisors (39350448).

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

20956032 is a wasteful number, since it uses less digits than its factorization.

20956032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18211 (or 18196 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20956032 is about 4577.7758791798. The cubic root of 20956032 is about 275.6997364703.

The spelling of 20956032 in words is "twenty million, nine hundred fifty-six thousand, thirty-two".