23190500 has 24 divisors (see below), whose sum is σ = 50649144. Its totient is φ = 9276000.

The previous prime is 23190491. The next prime is 23190539. The reversal of 23190500 is 509132.

It can be written as a sum of positive squares in 4 ways, for example, as 399424 + 22791076 = 632^2 + 4774^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22691 + ... + 23690.

It is an arithmetic number, because the mean of its divisors is an integer number (2110381).

Almost surely, 2^23190500 is an apocalyptic number.

23190500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23190500 is an abundant number, since it is smaller than the sum of its proper divisors (27458644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23190500 is a wasteful number, since it uses less digits than its factorization.

23190500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46400 (or 46388 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 23190500 is about 4815.6515654686. The cubic root of 23190500 is about 285.1696947749.

Adding to 23190500 its reverse (509132), we get a palindrome (23699632).

The spelling of 23190500 in words is "twenty-three million, one hundred ninety thousand, five hundred".