22140204 has 12 divisors (see below), whose sum is σ = 51660504. Its totient is φ = 7380064.

The previous prime is 22140199. The next prime is 22140221. The reversal of 22140204 is 40204122.

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

It is a zygodrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922497 + ... + 922520.

It is an arithmetic number, because the mean of its divisors is an integer number (4305042).

Almost surely, 2^22140204 is an apocalyptic number.

It is an amenable number.

22140204 is an abundant number, since it is smaller than the sum of its proper divisors (29520300).

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

22140204 is a wasteful number, since it uses less digits than its factorization.

22140204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845024 (or 1845022 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22140204 is about 4705.3378199657. The cubic root of 22140204 is about 280.7979111215.

Adding to 22140204 its reverse (40204122), we get a palindrome (62344326).

The spelling of 22140204 in words is "twenty-two million, one hundred forty thousand, two hundred four".