13728250 has 32 divisors (see below), whose sum is σ = 26030160. Its totient is φ = 5420800.

The previous prime is 13728229. The next prime is 13728251. The reversal of 13728250 is 5282731.

13728250 = T₈₀ + T₈₁ + ... + T₄₃₅.

It can be written as a sum of positive squares in 8 ways, for example, as 1147041 + 12581209 = 1071^2 + 3547^2 .

It is not an unprimeable number, because it can be changed into a prime (13728251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21942 + ... + 22558.

Almost surely, 2^13728250 is an apocalyptic number.

13728250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13728250 is a deficient number, since it is larger than the sum of its proper divisors (12301910).

13728250 is an equidigital number, since it uses as much as digits as its factorization.

13728250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 13728250 is about 3705.1653134509. The cubic root of 13728250 is about 239.4446069391. Note that the first 3 decimals are identical.

The spelling of 13728250 in words is "thirteen million, seven hundred twenty-eight thousand, two hundred fifty".