23881985 has 16 divisors (see below), whose sum is σ = 29614464. Its totient is φ = 18477312.

The previous prime is 23881973. The next prime is 23882011. The reversal of 23881985 is 58918832.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23881985 is a prime.

It is a Duffinian 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, 23804 + ... + 24786.

It is an arithmetic number, because the mean of its divisors is an integer number (1850904).

Almost surely, 2^23881985 is an apocalyptic number.

It is an amenable number.

23881985 is a deficient number, since it is larger than the sum of its proper divisors (5732479).

23881985 is a wasteful number, since it uses less digits than its factorization.

23881985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its digits is 138240, while the sum is 44.

The square root of 23881985 is about 4886.9197865322. The cubic root of 23881985 is about 287.9763395236.

The spelling of 23881985 in words is "twenty-three million, eight hundred eighty-one thousand, nine hundred eighty-five".