23813569 has 8 divisors (see below), whose sum is σ = 25724160. Its totient is φ = 21914256.

The previous prime is 23813567. The next prime is 23813591. The reversal of 23813569 is 96531832.

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

It is not a de Polignac number, because 23813569 - 2¹ = 23813567 is a prime.

It is a super-2 number, since 2×23813569² = 1134172137035522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23813561) 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, 1872 + ... + 7150.

It is an arithmetic number, because the mean of its divisors is an integer number (3215520).

Almost surely, 2^23813569 is an apocalyptic number.

It is an amenable number.

23813569 is a deficient number, since it is larger than the sum of its proper divisors (1910591).

23813569 is a wasteful number, since it uses less digits than its factorization.

23813569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639.

The product of its digits is 38880, while the sum is 37.

The square root of 23813569 is about 4879.9148558146. The cubic root of 23813569 is about 287.7010827667.

The spelling of 23813569 in words is "twenty-three million, eight hundred thirteen thousand, five hundred sixty-nine".