23540190 has 32 divisors (see below), whose sum is σ = 56725920. Its totient is φ = 6251904.

The previous prime is 23540173. The next prime is 23540197. The reversal of 23540190 is 9104532.

It is a super-2 number, since 2×23540190² = 1108281090472200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23540190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23540197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6612 + ... + 9528.

It is an arithmetic number, because the mean of its divisors is an integer number (1772685).

Almost surely, 2^23540190 is an apocalyptic number.

23540190 is an abundant number, since it is smaller than the sum of its proper divisors (33185730).

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

23540190 is a wasteful number, since it uses less digits than its factorization.

23540190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 23540190 is about 4851.8233685904. The cubic root of 23540190 is about 286.5959097647.

The spelling of 23540190 in words is "twenty-three million, five hundred forty thousand, one hundred ninety".