13981250 has 24 divisors (see below), whose sum is σ = 26224884. Its totient is φ = 5590000.

The previous prime is 13981243. The next prime is 13981273. The reversal of 13981250 is 5218931.

It can be written as a sum of positive squares in 6 ways, for example, as 534361 + 13446889 = 731^2 + 3667^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5132 + ... + 7368.

Almost surely, 2^13981250 is an apocalyptic number.

13981250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13981250 is a deficient number, since it is larger than the sum of its proper divisors (12243634).

13981250 is an frugal number, since it uses more digits than its factorization.

13981250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 13981250 is about 3739.1509731489. The cubic root of 13981250 is about 240.9065827112.

The spelling of 13981250 in words is "thirteen million, nine hundred eighty-one thousand, two hundred fifty".