23572993 has 4 divisors (see below), whose sum is σ = 23617108. Its totient is φ = 23528880.

The previous prime is 23572981. The next prime is 23573003. The reversal of 23572993 is 39927532.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3214849 + 20358144 = 1793^2 + 4512^2 .

It is a cyclic number.

It is not a de Polignac number, because 23572993 - 2⁵ = 23572961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23572903) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21246 + ... + 22327.

It is an arithmetic number, because the mean of its divisors is an integer number (5904277).

Almost surely, 2^23572993 is an apocalyptic number.

It is an amenable number.

23572993 is a deficient number, since it is larger than the sum of its proper divisors (44115).

23572993 is an equidigital number, since it uses as much as digits as its factorization.

23572993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44114.

The product of its digits is 102060, while the sum is 40.

The square root of 23572993 is about 4855.2026734216. The cubic root of 23572993 is about 286.7289707437.

The spelling of 23572993 in words is "twenty-three million, five hundred seventy-two thousand, nine hundred ninety-three".