23002993 has 8 divisors (see below), whose sum is σ = 24810408. Its totient is φ = 21201024.

The previous prime is 23002951. The next prime is 23002999. The reversal of 23002993 is 39920032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 506944 + 22496049 = 712^2 + 4743^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-23002993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23002999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13455 + ... + 15067.

It is an arithmetic number, because the mean of its divisors is an integer number (3101301).

Almost surely, 2^23002993 is an apocalyptic number.

It is an amenable number.

23002993 is a deficient number, since it is larger than the sum of its proper divisors (1807415).

23002993 is a wasteful number, since it uses less digits than its factorization.

23002993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 23002993 is about 4796.1435549825. The cubic root of 23002993 is about 284.3990332383.

The spelling of 23002993 in words is "twenty-three million, two thousand, nine hundred ninety-three".