20956196 has 12 divisors (see below), whose sum is σ = 36938160. Its totient is φ = 10402440.

The previous prime is 20956181. The next prime is 20956211. The reversal of 20956196 is 69165902.

It is an interprime number because it is at equal distance from previous prime (20956181) and next prime (20956211).

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, 18290 + ... + 19401.

It is an arithmetic number, because the mean of its divisors is an integer number (3078180).

Almost surely, 2^20956196 is an apocalyptic number.

It is an amenable number.

20956196 is a deficient number, since it is larger than the sum of its proper divisors (15981964).

20956196 is a wasteful number, since it uses less digits than its factorization.

20956196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37834 (or 37832 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 20956196 is about 4577.7937917735. The cubic root of 20956196 is about 275.7004556688.

The spelling of 20956196 in words is "twenty million, nine hundred fifty-six thousand, one hundred ninety-six".