23489765 has 16 divisors (see below), whose sum is σ = 30466800. Its totient is φ = 17283072.

The previous prime is 23489737. The next prime is 23489771. The reversal of 23489765 is 56798432.

It can be written as a sum of positive squares in 8 ways, for example, as 10407076 + 13082689 = 3226^2 + 3617^2 .

It is a cyclic number.

It is not a de Polignac number, because 23489765 - 2¹⁰ = 23488741 is a prime.

It is a congruent 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, 24821 + ... + 25749.

It is an arithmetic number, because the mean of its divisors is an integer number (1904175).

Almost surely, 2^23489765 is an apocalyptic number.

It is an amenable number.

23489765 is a deficient number, since it is larger than the sum of its proper divisors (6977035).

23489765 is a wasteful number, since it uses less digits than its factorization.

23489765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its digits is 362880, while the sum is 44.

The square root of 23489765 is about 4846.6240828024. The cubic root of 23489765 is about 286.3911262309.

The spelling of 23489765 in words is "twenty-three million, four hundred eighty-nine thousand, seven hundred sixty-five".