22231370 has 16 divisors (see below), whose sum is σ = 45733248. Its totient is φ = 7622160.

The previous prime is 22231369. The next prime is 22231373. The reversal of 22231370 is 7313222.

It is not an unprimeable number, because it can be changed into a prime (22231373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158726 + ... + 158865.

It is an arithmetic number, because the mean of its divisors is an integer number (2858328).

Almost surely, 2^22231370 is an apocalyptic number.

22231370 is an abundant number, since it is smaller than the sum of its proper divisors (23501878).

22231370 is a wasteful number, since it uses less digits than its factorization.

22231370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317605.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 22231370 is about 4715.0153764330. The cubic root of 22231370 is about 281.1827941479.

Adding to 22231370 its reverse (7313222), we get a palindrome (29544592).

The spelling of 22231370 in words is "twenty-two million, two hundred thirty-one thousand, three hundred seventy".