22290937 has 4 divisors (see below), whose sum is σ = 23059620. Its totient is φ = 21522256.

The previous prime is 22290929. The next prime is 22290943. The reversal of 22290937 is 73909222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7706176 + 14584761 = 2776^2 + 3819^2 .

It is a cyclic number.

It is not a de Polignac number, because 22290937 - 2³ = 22290929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22290907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384298 + ... + 384355.

It is an arithmetic number, because the mean of its divisors is an integer number (5764905).

Almost surely, 2^22290937 is an apocalyptic number.

It is an amenable number.

22290937 is a deficient number, since it is larger than the sum of its proper divisors (768683).

22290937 is an equidigital number, since it uses as much as digits as its factorization.

22290937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768682.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 22290937 is about 4721.3278852458. The cubic root of 22290937 is about 281.4337050361.

The spelling of 22290937 in words is "twenty-two million, two hundred ninety thousand, nine hundred thirty-seven".