23198855 has 4 divisors (see below), whose sum is σ = 27838632. Its totient is φ = 18559080.

The previous prime is 23198839. The next prime is 23198873. The reversal of 23198855 is 55889132.

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

It is not a de Polignac number, because 23198855 - 2⁴ = 23198839 is a prime.

It is a super-2 number, since 2×23198855² = 1076373746622050, which contains 22 as substring.

It is a Duffinian number.

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, 2319881 + ... + 2319890.

It is an arithmetic number, because the mean of its divisors is an integer number (6959658).

Almost surely, 2^23198855 is an apocalyptic number.

23198855 is a deficient number, since it is larger than the sum of its proper divisors (4639777).

23198855 is an equidigital number, since it uses as much as digits as its factorization.

23198855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4639776.

The product of its digits is 86400, while the sum is 41.

The square root of 23198855 is about 4816.5189712073. The cubic root of 23198855 is about 285.2039373415.

The spelling of 23198855 in words is "twenty-three million, one hundred ninety-eight thousand, eight hundred fifty-five".