13881250 has 24 divisors (see below), whose sum is σ = 26037396. Its totient is φ = 5550000.

The previous prime is 13881239. The next prime is 13881269. The reversal of 13881250 is 5218831.

It can be written as a sum of positive squares in 6 ways, for example, as 942841 + 12938409 = 971^2 + 3597^2 .

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, 5140 + ... + 7360.

Almost surely, 2^13881250 is an apocalyptic number.

13881250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13881250 is a deficient number, since it is larger than the sum of its proper divisors (12156146).

13881250 is an frugal number, since it uses more digits than its factorization.

13881250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248 (or 2228 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 13881250 is about 3725.7549570523. The cubic root of 13881250 is about 240.3308515660.

The spelling of 13881250 in words is "thirteen million, eight hundred eighty-one thousand, two hundred fifty".