22404210 has 16 divisors (see below), whose sum is σ = 53770176. Its totient is φ = 5974448.

The previous prime is 22404209. The next prime is 22404229. The reversal of 22404210 is 1240422.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22404210.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373374 + ... + 373433.

It is an arithmetic number, because the mean of its divisors is an integer number (3360636).

Almost surely, 2^22404210 is an apocalyptic number.

22404210 is an abundant number, since it is smaller than the sum of its proper divisors (31365966).

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

22404210 is a wasteful number, since it uses less digits than its factorization.

22404210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746817.

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

The square root of 22404210 is about 4733.3085680103. The cubic root of 22404210 is about 281.9096083714.

Adding to 22404210 its reverse (1240422), we get a palindrome (23644632).

The spelling of 22404210 in words is "twenty-two million, four hundred four thousand, two hundred ten".