23115340 has 24 divisors (see below), whose sum is σ = 49340592. Its totient is φ = 9094080.

The previous prime is 23115331. The next prime is 23115353. The reversal of 23115340 is 4351132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8254 + ... + 10693.

It is an arithmetic number, because the mean of its divisors is an integer number (2055858).

Almost surely, 2^23115340 is an apocalyptic number.

23115340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23115340 is an abundant number, since it is smaller than the sum of its proper divisors (26225252).

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

23115340 is a wasteful number, since it uses less digits than its factorization.

23115340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19017 (or 19015 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 23115340 is about 4807.8415115309. The cubic root of 23115340 is about 284.8612847063.

Adding to 23115340 its reverse (4351132), we get a palindrome (27466472).

The spelling of 23115340 in words is "twenty-three million, one hundred fifteen thousand, three hundred forty".