22990837 has 2 divisors, whose sum is σ = 22990838. Its totient is φ = 22990836.

The previous prime is 22990829. The next prime is 22990841. The reversal of 22990837 is 73809922.

It is the 1958-th star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13498276 + 9492561 = 3674^2 + 3081^2 .

It is a cyclic number.

It is not a de Polignac number, because 22990837 - 2³ = 22990829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22990837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22990897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11495418 + 11495419.

It is an arithmetic number, because the mean of its divisors is an integer number (11495419).

Almost surely, 2^22990837 is an apocalyptic number.

It is an amenable number.

22990837 is a deficient number, since it is larger than the sum of its proper divisors (1).

22990837 is an equidigital number, since it uses as much as digits as its factorization.

22990837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 22990837 is about 4794.8761193591. The cubic root of 22990837 is about 284.3489272397.

The spelling of 22990837 in words is "twenty-two million, nine hundred ninety thousand, eight hundred thirty-seven".