23809253 has 4 divisors (see below), whose sum is σ = 25640748. Its totient is φ = 21977760.

The previous prime is 23809249. The next prime is 23809259. The reversal of 23809253 is 35290832.

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 5678689 + 18130564 = 2383^2 + 4258^2 .

It is a cyclic number.

It is not a de Polignac number, because 23809253 - 2² = 23809249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23809259) 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, 915728 + ... + 915753.

It is an arithmetic number, because the mean of its divisors is an integer number (6410187).

Almost surely, 2^23809253 is an apocalyptic number.

It is an amenable number.

23809253 is a deficient number, since it is larger than the sum of its proper divisors (1831495).

23809253 is a wasteful number, since it uses less digits than its factorization.

23809253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831494.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 23809253 is about 4879.4726149452. The cubic root of 23809253 is about 287.6837006193.

The spelling of 23809253 in words is "twenty-three million, eight hundred nine thousand, two hundred fifty-three".