23190428 has 6 divisors (see below), whose sum is σ = 40583256. Its totient is φ = 11595212.

The previous prime is 23190413. The next prime is 23190443. The reversal of 23190428 is 82409132.

It is an interprime number because it is at equal distance from previous prime (23190413) and next prime (23190443).

It is a self number, because there is not a number n which added to its sum of digits gives 23190428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2898800 + ... + 2898807.

It is an arithmetic number, because the mean of its divisors is an integer number (6763876).

Almost surely, 2^23190428 is an apocalyptic number.

It is an amenable number.

23190428 is a deficient number, since it is larger than the sum of its proper divisors (17392828).

23190428 is a wasteful number, since it uses less digits than its factorization.

23190428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797611 (or 5797609 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 23190428 is about 4815.6440898389. The cubic root of 23190428 is about 285.1693996506.

The spelling of 23190428 in words is "twenty-three million, one hundred ninety thousand, four hundred twenty-eight".