22400737 has 2 divisors, whose sum is σ = 22400738. Its totient is φ = 22400736.

The previous prime is 22400711. The next prime is 22400743. The reversal of 22400737 is 73700422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22287841 + 112896 = 4721^2 + 336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22400737 is a prime.

It is not a weakly prime, because it can be changed into another prime (22400797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11200368 + 11200369.

It is an arithmetic number, because the mean of its divisors is an integer number (11200369).

Almost surely, 2^22400737 is an apocalyptic number.

It is an amenable number.

22400737 is a deficient number, since it is larger than the sum of its proper divisors (1).

22400737 is an equidigital number, since it uses as much as digits as its factorization.

22400737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 22400737 is about 4732.9416856750. The cubic root of 22400737 is about 281.8950408315.

The spelling of 22400737 in words is "twenty-two million, four hundred thousand, seven hundred thirty-seven".