22472288 has 48 divisors (see below), whose sum is σ = 48625920. Its totient is φ = 10175616.

The previous prime is 22472287. The next prime is 22472291. The reversal of 22472288 is 88227422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22472287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13181 + ... + 14787.

It is an arithmetic number, because the mean of its divisors is an integer number (1013040).

Almost surely, 2^22472288 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 22472288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24312960).

22472288 is an abundant number, since it is smaller than the sum of its proper divisors (26153632).

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

22472288 is a wasteful number, since it uses less digits than its factorization.

22472288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659 (or 1651 counting only the distinct ones).

The product of its digits is 28672, while the sum is 35.

The square root of 22472288 is about 4740.4944889748. The cubic root of 22472288 is about 282.1948588686.

It can be divided in two parts, 22472 and 288, that multiplied together give a square (6471936 = 2544²).

The spelling of 22472288 in words is "twenty-two million, four hundred seventy-two thousand, two hundred eighty-eight".