22120464 has 20 divisors (see below), whose sum is σ = 57144656. Its totient is φ = 7373472.

The previous prime is 22120459. The next prime is 22120477. The reversal of 22120464 is 46402122.

It is a self number, because there is not a number n which added to its sum of digits gives 22120464.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230374 + ... + 230469.

Almost surely, 2^22120464 is an apocalyptic number.

22120464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22120464 is an abundant number, since it is smaller than the sum of its proper divisors (35024192).

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

22120464 is a wasteful number, since it uses less digits than its factorization.

22120464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460854 (or 460848 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 22120464 is about 4703.2397344809. The cubic root of 22120464 is about 280.7144340387.

Adding to 22120464 its reverse (46402122), we get a palindrome (68522586).

The spelling of 22120464 in words is "twenty-two million, one hundred twenty thousand, four hundred sixty-four".