22451532 has 12 divisors (see below), whose sum is σ = 52386936. Its totient is φ = 7483840.

The previous prime is 22451503. The next prime is 22451567. The reversal of 22451532 is 23515422.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935469 + ... + 935492.

It is an arithmetic number, because the mean of its divisors is an integer number (4365578).

Almost surely, 2^22451532 is an apocalyptic number.

It is an amenable number.

22451532 is an abundant number, since it is smaller than the sum of its proper divisors (29935404).

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

22451532 is a wasteful number, since it uses less digits than its factorization.

22451532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870968 (or 1870966 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 22451532 is about 4738.3047601437. The cubic root of 22451532 is about 282.1079512261.

Adding to 22451532 its reverse (23515422), we get a palindrome (45966954).

The spelling of 22451532 in words is "twenty-two million, four hundred fifty-one thousand, five hundred thirty-two".