13778914 has 16 divisors (see below), whose sum is σ = 21830400. Its totient is φ = 6504624.

The previous prime is 13778903. The next prime is 13778917. The reversal of 13778914 is 41987731.

It is not an unprimeable number, because it can be changed into a prime (13778917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17824 + ... + 18580.

It is an arithmetic number, because the mean of its divisors is an integer number (1364400).

Almost surely, 2^13778914 is an apocalyptic number.

13778914 is a deficient number, since it is larger than the sum of its proper divisors (8051486).

13778914 is a wasteful number, since it uses less digits than its factorization.

13778914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257.

The product of its digits is 42336, while the sum is 40.

The square root of 13778914 is about 3711.9959590495. The cubic root of 13778914 is about 239.7388014818.

The spelling of 13778914 in words is "thirteen million, seven hundred seventy-eight thousand, nine hundred fourteen".