13138750 has 40 divisors (see below), whose sum is σ = 25754256. Its totient is φ = 5016000.

The previous prime is 13138721. The next prime is 13138757. The reversal of 13138750 is 5783131.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138757) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28522 + ... + 28978.

Almost surely, 2^13138750 is an apocalyptic number.

13138750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13138750 is a deficient number, since it is larger than the sum of its proper divisors (12615506).

13138750 is an equidigital number, since it uses as much as digits as its factorization.

13138750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 13138750 is about 3624.7413700842. The cubic root of 13138750 is about 235.9670427022.

The spelling of 13138750 in words is "thirteen million, one hundred thirty-eight thousand, seven hundred fifty".