22388532 has 12 divisors (see below), whose sum is σ = 52239936. Its totient is φ = 7462840.

The previous prime is 22388477. The next prime is 22388533. The reversal of 22388532 is 23588322.

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

It is a junction number, because it is equal to n+sod(n) for n = 22388493 and 22388502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22388533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932844 + ... + 932867.

It is an arithmetic number, because the mean of its divisors is an integer number (4353328).

Almost surely, 2^22388532 is an apocalyptic number.

It is an amenable number.

22388532 is an abundant number, since it is smaller than the sum of its proper divisors (29851404).

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

22388532 is a wasteful number, since it uses less digits than its factorization.

22388532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865718 (or 1865716 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 22388532 is about 4731.6521427510. The cubic root of 22388532 is about 281.8438348672.

The spelling of 22388532 in words is "twenty-two million, three hundred eighty-eight thousand, five hundred thirty-two".