22400722 has 4 divisors (see below), whose sum is σ = 33601086. Its totient is φ = 11200360.

The previous prime is 22400711. The next prime is 22400737. The reversal of 22400722 is 22700422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17816841 + 4583881 = 4221^2 + 2141^2 .

It is a super-2 number, since 2×22400722² = 1003584692242568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22400722.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600179 + ... + 5600182.

Almost surely, 2^22400722 is an apocalyptic number.

22400722 is a deficient number, since it is larger than the sum of its proper divisors (11200364).

22400722 is a wasteful number, since it uses less digits than its factorization.

22400722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11200363.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 22400722 is about 4732.9401010366. The cubic root of 22400722 is about 281.8949779106.

The spelling of 22400722 in words is "twenty-two million, four hundred thousand, seven hundred twenty-two".