22497994 has 4 divisors (see below), whose sum is σ = 33746994. Its totient is φ = 11248996.

The previous prime is 22497989. The next prime is 22498001. The reversal of 22497994 is 49979422.

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

It can be written as a sum of positive squares in only one way, i.e., 20820969 + 1677025 = 4563^2 + 1295^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5624497 + ... + 5624500.

Almost surely, 2^22497994 is an apocalyptic number.

22497994 is a deficient number, since it is larger than the sum of its proper divisors (11249000).

22497994 is a wasteful number, since it uses less digits than its factorization.

22497994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11248999.

The product of its digits is 326592, while the sum is 46.

The square root of 22497994 is about 4743.2050345731. The cubic root of 22497994 is about 282.3024185560.

The spelling of 22497994 in words is "twenty-two million, four hundred ninety-seven thousand, nine hundred ninety-four".