22775072 has 48 divisors (see below), whose sum is σ = 48263040. Its totient is φ = 10545408.

The previous prime is 22775069. The next prime is 22775089. The reversal of 22775072 is 27057722.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28178 + ... + 28974.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 2^22775072 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 22775072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24131520).

22775072 is an abundant number, since it is smaller than the sum of its proper divisors (25487968).

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

22775072 is a wasteful number, since it uses less digits than its factorization.

22775072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 22775072 is about 4772.3235430972. The cubic root of 22775072 is about 283.4566082561.

The spelling of 22775072 in words is "twenty-two million, seven hundred seventy-five thousand, seventy-two".