23240805 has 32 divisors (see below), whose sum is σ = 42681600. Its totient is φ = 10578432.

The previous prime is 23240797. The next prime is 23240831. The reversal of 23240805 is 50804232.

23240805 = 463² + 464² + ... + 552².

It is not a de Polignac number, because 23240805 - 2³ = 23240797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40561 + ... + 41129.

It is an arithmetic number, because the mean of its divisors is an integer number (1333800).

Almost surely, 2^23240805 is an apocalyptic number.

It is an amenable number.

23240805 is a deficient number, since it is larger than the sum of its proper divisors (19440795).

23240805 is a wasteful number, since it uses less digits than its factorization.

23240805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 23240805 is about 4820.8718091233. The cubic root of 23240805 is about 285.3757432461.

The spelling of 23240805 in words is "twenty-three million, two hundred forty thousand, eight hundred five".