13778344 has 16 divisors (see below), whose sum is σ = 27194400. Its totient is φ = 6526512.

The previous prime is 13778339. The next prime is 13778351. The reversal of 13778344 is 44387731.

13778344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45172 + ... + 45475.

It is an arithmetic number, because the mean of its divisors is an integer number (1699650).

Almost surely, 2^13778344 is an apocalyptic number.

It is an amenable number.

13778344 is a deficient number, since it is larger than the sum of its proper divisors (13416056).

13778344 is a wasteful number, since it uses less digits than its factorization.

13778344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90672 (or 90668 counting only the distinct ones).

The product of its digits is 56448, while the sum is 37.

The square root of 13778344 is about 3711.9191801547. The cubic root of 13778344 is about 239.7354956335.

The spelling of 13778344 in words is "thirteen million, seven hundred seventy-eight thousand, three hundred forty-four".