24257993 has 4 divisors (see below), whose sum is σ = 24284820. Its totient is φ = 24231168.

The previous prime is 24257921. The next prime is 24258001. The reversal of 24257993 is 39975242.

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 12369289 + 11888704 = 3517^2 + 3448^2 .

It is a cyclic number.

It is not a de Polignac number, because 24257993 - 2¹⁶ = 24192457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 24257993.

It is not an unprimeable number, because it can be changed into a prime (24257293) 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, 12008 + ... + 13881.

It is an arithmetic number, because the mean of its divisors is an integer number (6071205).

Almost surely, 2^24257993 is an apocalyptic number.

It is an amenable number.

24257993 is a deficient number, since it is larger than the sum of its proper divisors (26827).

24257993 is an equidigital number, since it uses as much as digits as its factorization.

24257993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26826.

The product of its digits is 136080, while the sum is 41.

The square root of 24257993 is about 4925.2404002241. The cubic root of 24257993 is about 289.4798165945.

The spelling of 24257993 in words is "twenty-four million, two hundred fifty-seven thousand, nine hundred ninety-three".