22407402 has 32 divisors (see below), whose sum is σ = 46529280. Its totient is φ = 7188480.

The previous prime is 22407379. The next prime is 22407439. The reversal of 22407402 is 20470422.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18858 + ... + 20010.

It is an arithmetic number, because the mean of its divisors is an integer number (1454040).

Almost surely, 2^22407402 is an apocalyptic number.

22407402 is an abundant number, since it is smaller than the sum of its proper divisors (24121878).

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

22407402 is a wasteful number, since it uses less digits than its factorization.

22407402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 22407402 is about 4733.6457408640. The cubic root of 22407402 is about 281.9229959257.

Adding to 22407402 its reverse (20470422), we get a palindrome (42877824).

The spelling of 22407402 in words is "twenty-two million, four hundred seven thousand, four hundred two".