20946356 has 12 divisors (see below), whose sum is σ = 36720768. Its totient is φ = 10454712.

The previous prime is 20946347. The next prime is 20946361. The reversal of 20946356 is 65364902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1886 + ... + 6741.

It is an arithmetic number, because the mean of its divisors is an integer number (3060064).

Almost surely, 2^20946356 is an apocalyptic number.

It is an amenable number.

20946356 is a deficient number, since it is larger than the sum of its proper divisors (15774412).

20946356 is a wasteful number, since it uses less digits than its factorization.

20946356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9238 (or 9236 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 20946356 is about 4576.7189120592. The cubic root of 20946356 is about 275.6572971171.

The spelling of 20946356 in words is "twenty million, nine hundred forty-six thousand, three hundred fifty-six".