22231532 has 6 divisors (see below), whose sum is σ = 38905188. Its totient is φ = 11115764.

The previous prime is 22231499. The next prime is 22231571. The reversal of 22231532 is 23513222.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778938 + ... + 2778945.

It is an arithmetic number, because the mean of its divisors is an integer number (6484198).

Almost surely, 2^22231532 is an apocalyptic number.

It is an amenable number.

22231532 is a deficient number, since it is larger than the sum of its proper divisors (16673656).

22231532 is a wasteful number, since it uses less digits than its factorization.

22231532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557887 (or 5557885 counting only the distinct ones).

The product of its digits is 720, while the sum is 20.

The square root of 22231532 is about 4715.0325555610. The cubic root of 22231532 is about 281.1834771393.

Adding to 22231532 its reverse (23513222), we get a palindrome (45744754).

The spelling of 22231532 in words is "twenty-two million, two hundred thirty-one thousand, five hundred thirty-two".