23863261 has 16 divisors (see below), whose sum is σ = 25397680. Its totient is φ = 22394880.

The previous prime is 23863249. The next prime is 23863267. The reversal of 23863261 is 16236832.

It can be written as a sum of positive squares in 8 ways, for example, as 36 + 23863225 = 6^2 + 4885^2 .

It is a 7-Lehmer number, since φ(23863261) divides (23863261-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 23863261 - 2¹¹ = 23861213 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 (23863267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218875 + ... + 218983.

It is an arithmetic number, because the mean of its divisors is an integer number (1587355).

Almost surely, 2^23863261 is an apocalyptic number.

It is an amenable number.

23863261 is a deficient number, since it is larger than the sum of its proper divisors (1534419).

23863261 is a wasteful number, since it uses less digits than its factorization.

23863261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its digits is 10368, while the sum is 31.

The square root of 23863261 is about 4885.0036847478. The cubic root of 23863261 is about 287.9010599246.

The spelling of 23863261 in words is "twenty-three million, eight hundred sixty-three thousand, two hundred sixty-one".