23820139 has 8 divisors (see below), whose sum is σ = 27887328. Its totient is φ = 19919040.

The previous prime is 23820133. The next prime is 23820149. The reversal of 23820139 is 93102832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23820139 - 2³ = 23820131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23820131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41212 + ... + 41785.

It is an arithmetic number, because the mean of its divisors is an integer number (3485916).

Almost surely, 2^23820139 is an apocalyptic number.

23820139 is a deficient number, since it is larger than the sum of its proper divisors (4067189).

23820139 is an equidigital number, since it uses as much as digits as its factorization.

23820139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83045.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 23820139 is about 4880.5879768733. The cubic root of 23820139 is about 287.7275385842.

The spelling of 23820139 in words is "twenty-three million, eight hundred twenty thousand, one hundred thirty-nine".