13228750 has 40 divisors (see below), whose sum is σ = 26147880. Its totient is φ = 5004000.

The previous prime is 13228741. The next prime is 13228751. The reversal of 13228750 is 5782231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13228751) 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, 23472 + ... + 24028.

It is an arithmetic number, because the mean of its divisors is an integer number (653697).

Almost surely, 2^13228750 is an apocalyptic number.

13228750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13228750 is a deficient number, since it is larger than the sum of its proper divisors (12919130).

13228750 is an equidigital number, since it uses as much as digits as its factorization.

13228750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 583 counting only the distinct ones).

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

The square root of 13228750 is about 3637.1348613985. The cubic root of 13228750 is about 236.5046059292.

It can be divided in two parts, 132 and 28750, that added together give a palindrome (28882).

The spelling of 13228750 in words is "thirteen million, two hundred twenty-eight thousand, seven hundred fifty".