13938280 has 16 divisors (see below), whose sum is σ = 31361220. Its totient is φ = 5575296.

The previous prime is 13938277. The next prime is 13938289. The reversal of 13938280 is 8283931.

13938280 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 11847364 + 2090916 = 3442^2 + 1446^2 .

It is not an unprimeable number, because it can be changed into a prime (13938289) 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, 174189 + ... + 174268.

Almost surely, 2^13938280 is an apocalyptic number.

13938280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13938280 is an abundant number, since it is smaller than the sum of its proper divisors (17422940).

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

13938280 is a wasteful number, since it uses less digits than its factorization.

13938280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348468 (or 348464 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 13938280 is about 3733.4005946322. The cubic root of 13938280 is about 240.6595285246.

The spelling of 13938280 in words is "thirteen million, nine hundred thirty-eight thousand, two hundred eighty".