12728310 has 32 divisors (see below), whose sum is σ = 34912512. Its totient is φ = 2909280.

The previous prime is 12728293. The next prime is 12728311. The reversal of 12728310 is 1382721.

It is a super-2 number, since 2×12728310² = 324019750912200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12728311) 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, 30096 + ... + 30515.

It is an arithmetic number, because the mean of its divisors is an integer number (1091016).

Almost surely, 2^12728310 is an apocalyptic number.

12728310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12728310 is an abundant number, since it is smaller than the sum of its proper divisors (22184202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12728310 is a wasteful number, since it uses less digits than its factorization.

12728310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60628.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12728310 is about 3567.6757139628. The cubic root of 12728310 is about 233.4838869644.

The spelling of 12728310 in words is "twelve million, seven hundred twenty-eight thousand, three hundred ten".