22531488 has 48 divisors (see below), whose sum is σ = 67596480. Its totient is φ = 6437376.

The previous prime is 22531433. The next prime is 22531489. The reversal of 22531488 is 88413522.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (22531489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16093 + ... + 17436.

It is an arithmetic number, because the mean of its divisors is an integer number (1408260).

Almost surely, 2^22531488 is an apocalyptic number.

22531488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22531488 is an abundant number, since it is smaller than the sum of its proper divisors (45064992).

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

22531488 is a wasteful number, since it uses less digits than its factorization.

22531488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33549 (or 33541 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 22531488 is about 4746.7344564448. The cubic root of 22531488 is about 282.4424421333.

It can be divided in two parts, 2253 and 1488, that added together give a triangular number (3741 = T₈₆).

The spelling of 22531488 in words is "twenty-two million, five hundred thirty-one thousand, four hundred eighty-eight".