22597798 has 4 divisors (see below), whose sum is σ = 33896700. Its totient is φ = 11298898.

The previous prime is 22597763. The next prime is 22597801. The reversal of 22597798 is 89779522.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5649448 + ... + 5649451.

It is an arithmetic number, because the mean of its divisors is an integer number (8474175).

Almost surely, 2^22597798 is an apocalyptic number.

22597798 is a deficient number, since it is larger than the sum of its proper divisors (11298902).

22597798 is a wasteful number, since it uses less digits than its factorization.

22597798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11298901.

The product of its digits is 635040, while the sum is 49.

The square root of 22597798 is about 4753.7141268696. The cubic root of 22597798 is about 282.7192460954.

The spelling of 22597798 in words is "twenty-two million, five hundred ninety-seven thousand, seven hundred ninety-eight".