22503272 has 64 divisors (see below), whose sum is σ = 48591360. Its totient is φ = 9676800.

The previous prime is 22503263. The next prime is 22503293. The reversal of 22503272 is 27230522.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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, 199088 + ... + 199200.

It is an arithmetic number, because the mean of its divisors is an integer number (759240).

Almost surely, 2^22503272 is an apocalyptic number.

22503272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22503272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24295680).

22503272 is an abundant number, since it is smaller than the sum of its proper divisors (26088088).

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

22503272 is a wasteful number, since it uses less digits than its factorization.

22503272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 22503272 is about 4743.7613767980. The cubic root of 22503272 is about 282.3244927561.

Adding to 22503272 its reverse (27230522), we get a palindrome (49733794).

The spelling of 22503272 in words is "twenty-two million, five hundred three thousand, two hundred seventy-two".