13778036 has 12 divisors (see below), whose sum is σ = 24333540. Its totient is φ = 6825600.

The previous prime is 13778033. The next prime is 13778053. The reversal of 13778036 is 63087731.

13778036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11356900 + 2421136 = 3370^2 + 1556^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13777987 and 13778005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13778033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15365 + ... + 16236.

It is an arithmetic number, because the mean of its divisors is an integer number (2027795).

Almost surely, 2^13778036 is an apocalyptic number.

It is an amenable number.

13778036 is a deficient number, since it is larger than the sum of its proper divisors (10555504).

13778036 is a wasteful number, since it uses less digits than its factorization.

13778036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31714 (or 31712 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 13778036 is about 3711.8776919505. The cubic root of 13778036 is about 239.7337092775.

The spelling of 13778036 in words is "thirteen million, seven hundred seventy-eight thousand, thirty-six".