13972785 has 32 divisors (see below), whose sum is σ = 23347200. Its totient is φ = 7128000.

The previous prime is 13972781. The next prime is 13972787. The reversal of 13972785 is 58727931.

13972785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13972785 - 2² = 13972781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13972781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70116 + ... + 70314.

It is an arithmetic number, because the mean of its divisors is an integer number (729600).

Almost surely, 2^13972785 is an apocalyptic number.

13972785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13972785 is a deficient number, since it is larger than the sum of its proper divisors (9374415).

13972785 is a wasteful number, since it uses less digits than its factorization.

13972785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its digits is 105840, while the sum is 42.

The square root of 13972785 is about 3738.0188603055. The cubic root of 13972785 is about 240.8579536324.

The spelling of 13972785 in words is "thirteen million, nine hundred seventy-two thousand, seven hundred eighty-five".