20955974 has 32 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 8995104.

The previous prime is 20955973. The next prime is 20955989. The reversal of 20955974 is 47955902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20955971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28787 + ... + 29505.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^20955974 is an apocalyptic number.

20955974 is a deficient number, since it is larger than the sum of its proper divisors (15332026).

20955974 is a wasteful number, since it uses less digits than its factorization.

20955974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 20955974 is about 4577.7695442213. The cubic root of 20955974 is about 275.6994821188.

The spelling of 20955974 in words is "twenty million, nine hundred fifty-five thousand, nine hundred seventy-four".