22492457 has 8 divisors (see below), whose sum is σ = 24473736. Its totient is φ = 20547072.

The previous prime is 22492433. The next prime is 22492489. The reversal of 22492457 is 75429422.

It can be written as a sum of positive squares in 4 ways, for example, as 2920681 + 19571776 = 1709^2 + 4424^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22492457 - 2¹⁰ = 22491433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22492417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7658 + ... + 10179.

It is an arithmetic number, because the mean of its divisors is an integer number (3059217).

Almost surely, 2^22492457 is an apocalyptic number.

It is an amenable number.

22492457 is a deficient number, since it is larger than the sum of its proper divisors (1981279).

22492457 is a wasteful number, since it uses less digits than its factorization.

22492457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17947.

The product of its digits is 40320, while the sum is 35.

The square root of 22492457 is about 4742.6213215900. The cubic root of 22492457 is about 282.2792574282.

The spelling of 22492457 in words is "twenty-two million, four hundred ninety-two thousand, four hundred fifty-seven".