13772868 has 12 divisors (see below), whose sum is σ = 32136720. Its totient is φ = 4590952.

The previous prime is 13772867. The next prime is 13772879. The reversal of 13772868 is 86827731.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (13772867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573858 + ... + 573881.

It is an arithmetic number, because the mean of its divisors is an integer number (2678060).

Almost surely, 2^13772868 is an apocalyptic number.

It is an amenable number.

13772868 is an abundant number, since it is smaller than the sum of its proper divisors (18363852).

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

13772868 is a wasteful number, since it uses less digits than its factorization.

13772868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147746 (or 1147744 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 13772868 is about 3711.1814830321. The cubic root of 13772868 is about 239.7037316438.

The spelling of 13772868 in words is "thirteen million, seven hundred seventy-two thousand, eight hundred sixty-eight".