16133868 has 36 divisors (see below), whose sum is σ = 41397720. Its totient is φ = 5296896.

The previous prime is 16133863. The next prime is 16133893. The reversal of 16133868 is 86833161.

16133868 is a `hidden beast` number, since 1 + 613 + 38 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16133861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 933 + ... + 5756.

Almost surely, 2^16133868 is an apocalyptic number.

16133868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16133868 is an abundant number, since it is smaller than the sum of its proper divisors (25263852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16133868 is a wasteful number, since it uses less digits than its factorization.

16133868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6766 (or 6761 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 16133868 is about 4016.6986444094. The cubic root of 16133868 is about 252.6850220543.

The spelling of 16133868 in words is "sixteen million, one hundred thirty-three thousand, eight hundred sixty-eight".