23198917 has 8 divisors (see below), whose sum is σ = 26649216. Its totient is φ = 19782672.

The previous prime is 23198909. The next prime is 23198941. The reversal of 23198917 is 71989132.

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

It is not a de Polignac number, because 23198917 - 2³ = 23198909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23198917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23190917) 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, 7033 + ... + 9790.

It is an arithmetic number, because the mean of its divisors is an integer number (3331152).

Almost surely, 2^23198917 is an apocalyptic number.

It is an amenable number.

23198917 is a deficient number, since it is larger than the sum of its proper divisors (3450299).

23198917 is a wasteful number, since it uses less digits than its factorization.

23198917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17027.

The product of its digits is 27216, while the sum is 40.

The square root of 23198917 is about 4816.5254073865. The cubic root of 23198917 is about 285.2041914148.

It can be divided in two parts, 2319 and 8917, that added together give a square (11236 = 106²).

The spelling of 23198917 in words is "twenty-three million, one hundred ninety-eight thousand, nine hundred seventeen".