22428937 has 2 divisors, whose sum is σ = 22428938. Its totient is φ = 22428936.

The previous prime is 22428883. The next prime is 22428943. The reversal of 22428937 is 73982422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21307456 + 1121481 = 4616^2 + 1059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22428937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22428896 and 22428905.

It is not a weakly prime, because it can be changed into another prime (22428997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11214468 + 11214469.

It is an arithmetic number, because the mean of its divisors is an integer number (11214469).

Almost surely, 2^22428937 is an apocalyptic number.

It is an amenable number.

22428937 is a deficient number, since it is larger than the sum of its proper divisors (1).

22428937 is an equidigital number, since it uses as much as digits as its factorization.

22428937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 22428937 is about 4735.9198684099. The cubic root of 22428937 is about 282.0132825761.

It can be divided in two parts, 224 and 28937, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 22428937 in words is "twenty-two million, four hundred twenty-eight thousand, nine hundred thirty-seven".