22140230 has 32 divisors (see below), whose sum is σ = 45792000. Its totient is φ = 7549920.

The previous prime is 22140221. The next prime is 22140233. The reversal of 22140230 is 3204122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14021 + ... + 15519.

It is an arithmetic number, because the mean of its divisors is an integer number (1431000).

Almost surely, 2^22140230 is an apocalyptic number.

22140230 is an abundant number, since it is smaller than the sum of its proper divisors (23651770).

22140230 is a wasteful number, since it uses less digits than its factorization.

22140230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22140230 is about 4705.3405827846. The cubic root of 22140230 is about 280.7980210384.

Adding to 22140230 its reverse (3204122), we get a palindrome (25344352).

The spelling of 22140230 in words is "twenty-two million, one hundred forty thousand, two hundred thirty".