22271976 has 64 divisors (see below), whose sum is σ = 62563200. Its totient is φ = 7340544.

The previous prime is 22271927. The next prime is 22271987. The reversal of 22271976 is 67917222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22271976.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20421 + ... + 21483.

It is an arithmetic number, because the mean of its divisors is an integer number (977550).

Almost surely, 2^22271976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22271976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31281600).

22271976 is an abundant number, since it is smaller than the sum of its proper divisors (40291224).

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

22271976 is a wasteful number, since it uses less digits than its factorization.

22271976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1165 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 22271976 is about 4719.3194424620. The cubic root of 22271976 is about 281.3538851788.

The spelling of 22271976 in words is "twenty-two million, two hundred seventy-one thousand, nine hundred seventy-six".