13778484 has 24 divisors (see below), whose sum is σ = 32406528. Its totient is φ = 4556160.

The previous prime is 13778461. The next prime is 13778491. The reversal of 13778484 is 48487731.

13778484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2997 + ... + 6044.

It is an arithmetic number, because the mean of its divisors is an integer number (1350272).

Almost surely, 2^13778484 is an apocalyptic number.

It is an amenable number.

13778484 is an abundant number, since it is smaller than the sum of its proper divisors (18628044).

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

13778484 is a wasteful number, since it uses less digits than its factorization.

13778484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9175 (or 9173 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 13778484 is about 3711.9380382760. The cubic root of 13778484 is about 239.7363076047.

The spelling of 13778484 in words is "thirteen million, seven hundred seventy-eight thousand, four hundred eighty-four".