13078656 has 48 divisors (see below), whose sum is σ = 37638510. Its totient is φ = 4359168.

The previous prime is 13078619. The next prime is 13078657. The reversal of 13078656 is 65687031.

It can be written as a sum of positive squares in only one way, i.e., 12110400 + 968256 = 3480^2 + 984^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13078656.

It is not an unprimeable number, because it can be changed into a prime (13078657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4525 + ... + 6828.

Almost surely, 2^13078656 is an apocalyptic number.

13078656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13078656 is an abundant number, since it is smaller than the sum of its proper divisors (24559854).

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

13078656 is a wasteful number, since it uses less digits than its factorization.

13078656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11373 (or 11358 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 13078656 is about 3616.4424508071. The cubic root of 13078656 is about 235.6067375565.

The spelling of 13078656 in words is "thirteen million, seventy-eight thousand, six hundred fifty-six".