13780395 has 16 divisors (see below), whose sum is σ = 24498720. Its totient is φ = 7349472.

The previous prime is 13780379. The next prime is 13780397. The reversal of 13780395 is 59308731.

13780395 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 13780395 - 2⁴ = 13780379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13780397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50904 + ... + 51173.

It is an arithmetic number, because the mean of its divisors is an integer number (1531170).

Almost surely, 2^13780395 is an apocalyptic number.

13780395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13780395 is a deficient number, since it is larger than the sum of its proper divisors (10718325).

13780395 is a wasteful number, since it uses less digits than its factorization.

13780395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102091 (or 102085 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 13780395 is about 3712.1954420531. The cubic root of 13780395 is about 239.7473904617.

The spelling of 13780395 in words is "thirteen million, seven hundred eighty thousand, three hundred ninety-five".