23858961 has 16 divisors (see below), whose sum is σ = 36626304. Its totient is φ = 13532544.

The previous prime is 23858959. The next prime is 23858999. The reversal of 23858961 is 16985832.

It is not a de Polignac number, because 23858961 - 2¹ = 23858959 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (23858921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270 + ... + 7023.

It is an arithmetic number, because the mean of its divisors is an integer number (2289144).

Almost surely, 2^23858961 is an apocalyptic number.

23858961 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23858961 is a deficient number, since it is larger than the sum of its proper divisors (12767343).

23858961 is a wasteful number, since it uses less digits than its factorization.

23858961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8440.

The product of its digits is 103680, while the sum is 42.

The square root of 23858961 is about 4884.5635424263. The cubic root of 23858961 is about 287.8837662708.

The spelling of 23858961 in words is "twenty-three million, eight hundred fifty-eight thousand, nine hundred sixty-one".