23020865 has 16 divisors (see below), whose sum is σ = 32045952. Its totient is φ = 15548544.

The previous prime is 23020859. The next prime is 23020883. The reversal of 23020865 is 56802032.

It is a cyclic number.

It is not a de Polignac number, because 23020865 - 2⁴ = 23020849 is a prime.

It is a super-3 number, since 3×23020865³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2564 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (2002872).

Almost surely, 2^23020865 is an apocalyptic number.

It is an amenable number.

23020865 is a deficient number, since it is larger than the sum of its proper divisors (9025087).

23020865 is an equidigital number, since it uses as much as digits as its factorization.

23020865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9896.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 23020865 is about 4798.0063568111. The cubic root of 23020865 is about 284.4726680583.

Adding to 23020865 its reverse (56802032), we get a palindrome (79822897).

The spelling of 23020865 in words is "twenty-three million, twenty thousand, eight hundred sixty-five".