13938078 has 32 divisors (see below), whose sum is σ = 34755840. Its totient is φ = 3620160.

The previous prime is 13938061. The next prime is 13938083. The reversal of 13938078 is 87083931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14623 + ... + 15546.

It is an arithmetic number, because the mean of its divisors is an integer number (1086120).

Almost surely, 2^13938078 is an apocalyptic number.

13938078 is an abundant number, since it is smaller than the sum of its proper divisors (20817762).

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

13938078 is a wasteful number, since it uses less digits than its factorization.

13938078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30192.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 13938078 is about 3733.3735414501. The cubic root of 13938078 is about 240.6583659359.

The spelling of 13938078 in words is "thirteen million, nine hundred thirty-eight thousand, seventy-eight".