23198638 has 8 divisors (see below), whose sum is σ = 35006832. Its totient is φ = 11529696.

The previous prime is 23198603. The next prime is 23198641. The reversal of 23198638 is 83689132.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23198638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34395 + ... + 35062.

It is an arithmetic number, because the mean of its divisors is an integer number (4375854).

Almost surely, 2^23198638 is an apocalyptic number.

23198638 is a deficient number, since it is larger than the sum of its proper divisors (11808194).

23198638 is a wasteful number, since it uses less digits than its factorization.

23198638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69626.

The product of its digits is 62208, while the sum is 40.

The square root of 23198638 is about 4816.4964445123. The cubic root of 23198638 is about 285.2030480814.

The spelling of 23198638 in words is "twenty-three million, one hundred ninety-eight thousand, six hundred thirty-eight".