22488457 has 8 divisors (see below), whose sum is σ = 24701760. Its totient is φ = 20378160.

The previous prime is 22488449. The next prime is 22488463. The reversal of 22488457 is 75488422.

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

It is a cyclic number.

It is not a de Polignac number, because 22488457 - 2³ = 22488449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22488407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25294 + ... + 26167.

It is an arithmetic number, because the mean of its divisors is an integer number (3087720).

Almost surely, 2^22488457 is an apocalyptic number.

It is an amenable number.

22488457 is a deficient number, since it is larger than the sum of its proper divisors (2213303).

22488457 is a wasteful number, since it uses less digits than its factorization.

22488457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51503.

The product of its digits is 143360, while the sum is 40.

The square root of 22488457 is about 4742.1995951246. The cubic root of 22488457 is about 282.2625231667.

The spelling of 22488457 in words is "twenty-two million, four hundred eighty-eight thousand, four hundred fifty-seven".