22231602 has 24 divisors (see below), whose sum is σ = 49290384. Its totient is φ = 7237944.

The previous prime is 22231589. The next prime is 22231607. The reversal of 22231602 is 20613222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22231607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13588 + ... + 15135.

It is an arithmetic number, because the mean of its divisors is an integer number (2053766).

Almost surely, 2^22231602 is an apocalyptic number.

22231602 is an abundant number, since it is smaller than the sum of its proper divisors (27058782).

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

22231602 is a wasteful number, since it uses less digits than its factorization.

22231602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28774 (or 28771 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22231602 is about 4715.0399786216. The cubic root of 22231602 is about 281.1837722580.

Adding to 22231602 its reverse (20613222), we get a palindrome (42844824).

The spelling of 22231602 in words is "twenty-two million, two hundred thirty-one thousand, six hundred two".