22761472 has 26 divisors (see below), whose sum is σ = 45525578. Its totient is φ = 11378688.

The previous prime is 22761469. The next prime is 22761499. The reversal of 22761472 is 27416722.

It can be written as a sum of positive squares in only one way, i.e., 22429696 + 331776 = 4736^2 + 576^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1318 + ... + 6874.

Almost surely, 2^22761472 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 22761472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22762789).

22761472 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22761472 is an frugal number, since it uses more digits than its factorization.

22761472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5581 (or 5559 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

The square root of 22761472 is about 4770.8984478817. The cubic root of 22761472 is about 283.4001755408.

The spelling of 22761472 in words is "twenty-two million, seven hundred sixty-one thousand, four hundred seventy-two".