23877891 has 12 divisors (see below), whose sum is σ = 34552440. Its totient is φ = 15889920.

The previous prime is 23877883. The next prime is 23877907. The reversal of 23877891 is 19877832.

It is not a de Polignac number, because 23877891 - 2³ = 23877883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23877871) 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 11 ways as a sum of consecutive naturals, for example, 3700 + ... + 7838.

It is an arithmetic number, because the mean of its divisors is an integer number (2879370).

Almost surely, 2^23877891 is an apocalyptic number.

23877891 is a deficient number, since it is larger than the sum of its proper divisors (10674549).

23877891 is a wasteful number, since it uses less digits than its factorization.

23877891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4786 (or 4783 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 23877891 is about 4886.5008953238. The cubic root of 23877891 is about 287.9598830117.

The spelling of 23877891 in words is "twenty-three million, eight hundred seventy-seven thousand, eight hundred ninety-one".