23198791 has 32 divisors (see below), whose sum is σ = 30942720. Its totient is φ = 16848000.

The previous prime is 23198783. The next prime is 23198803. The reversal of 23198791 is 19789132.

It is a cyclic number.

It is not a de Polignac number, because 23198791 - 2³ = 23198783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23198701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147685 + ... + 147841.

It is an arithmetic number, because the mean of its divisors is an integer number (966960).

Almost surely, 2^23198791 is an apocalyptic number.

23198791 is a deficient number, since it is larger than the sum of its proper divisors (7743929).

23198791 is a wasteful number, since it uses less digits than its factorization.

23198791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295.

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

The square root of 23198791 is about 4816.5123274004. The cubic root of 23198791 is about 285.2036750718.

The spelling of 23198791 in words is "twenty-three million, one hundred ninety-eight thousand, seven hundred ninety-one".