23078993 has 4 divisors (see below), whose sum is σ = 26376000. Its totient is φ = 19781988.

The previous prime is 23078989. The next prime is 23079011. The reversal of 23078993 is 39987032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23078993 - 2² = 23078989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23078993.

It is not an unprimeable number, because it can be changed into a prime (23078953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648493 + ... + 1648506.

It is an arithmetic number, because the mean of its divisors is an integer number (6594000).

Almost surely, 2^23078993 is an apocalyptic number.

It is an amenable number.

23078993 is a deficient number, since it is larger than the sum of its proper divisors (3297007).

23078993 is an equidigital number, since it uses as much as digits as its factorization.

23078993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297006.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 23078993 is about 4804.0600537462. The cubic root of 23078993 is about 284.7118992805.

The spelling of 23078993 in words is "twenty-three million, seventy-eight thousand, nine hundred ninety-three".