19220956 has 12 divisors (see below), whose sum is σ = 33700968. Its totient is φ = 9592112.

The previous prime is 19220953. The next prime is 19220977. The reversal of 19220956 is 65902291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19220953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086 + ... + 6541.

It is an arithmetic number, because the mean of its divisors is an integer number (2808414).

Almost surely, 2^19220956 is an apocalyptic number.

It is an amenable number.

19220956 is a deficient number, since it is larger than the sum of its proper divisors (14480012).

19220956 is a wasteful number, since it uses less digits than its factorization.

19220956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9188 (or 9186 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 19220956 is about 4384.1710733045. The cubic root of 19220956 is about 267.8705657003.

The spelling of 19220956 in words is "nineteen million, two hundred twenty thousand, nine hundred fifty-six".