13791078 has 24 divisors (see below), whose sum is σ = 34149648. Its totient is φ = 3940272.

The previous prime is 13791061. The next prime is 13791103. The reversal of 13791078 is 87019731.

It is a super-3 number, since 3×13791078³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54601 + ... + 54852.

It is an arithmetic number, because the mean of its divisors is an integer number (1422902).

Almost surely, 2^13791078 is an apocalyptic number.

13791078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13791078 is an abundant number, since it is smaller than the sum of its proper divisors (20358570).

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

13791078 is a wasteful number, since it uses less digits than its factorization.

13791078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109468 (or 109465 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 13791078 is about 3713.6340692104. The cubic root of 13791078 is about 239.8093277238.

The spelling of 13791078 in words is "thirteen million, seven hundred ninety-one thousand, seventy-eight".