23911955 has 16 divisors (see below), whose sum is σ = 29635200. Its totient is φ = 18511872.

The previous prime is 23911919. The next prime is 23911963. The reversal of 23911955 is 55911932.

It is a cyclic number.

It is not a de Polignac number, because 23911955 - 2¹⁶ = 23846419 is a prime.

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, 22271 + ... + 23319.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^23911955 is an apocalyptic number.

23911955 is a deficient number, since it is larger than the sum of its proper divisors (5723245).

23911955 is a wasteful number, since it uses less digits than its factorization.

23911955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198.

The product of its digits is 12150, while the sum is 35.

The square root of 23911955 is about 4889.9851738017. The cubic root of 23911955 is about 288.0967516690.

It can be divided in two parts, 239 and 11955, that multiplied together give a triangular number (2857245 = T₂₃₉₀).

The spelling of 23911955 in words is "twenty-three million, nine hundred eleven thousand, nine hundred fifty-five".