20941656 has 32 divisors (see below), whose sum is σ = 53075760. Its totient is φ = 6884352.

The previous prime is 20941607. The next prime is 20941673. The reversal of 20941656 is 65614902.

It is a congruent number.

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, 4225 + ... + 7728.

Almost surely, 2^20941656 is an apocalyptic number.

It is an amenable number.

20941656 is an abundant number, since it is smaller than the sum of its proper divisors (32134104).

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

20941656 is a wasteful number, since it uses less digits than its factorization.

20941656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035 (or 12031 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 20941656 is about 4576.2054149699. The cubic root of 20941656 is about 275.6366779982.

The spelling of 20941656 in words is "twenty million, nine hundred forty-one thousand, six hundred fifty-six".