12728460 has 24 divisors (see below), whose sum is σ = 35639856. Its totient is φ = 3394240.

The previous prime is 12728447. The next prime is 12728479. The reversal of 12728460 is 6482721.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106011 + ... + 106130.

It is an arithmetic number, because the mean of its divisors is an integer number (1484994).

Almost surely, 2^12728460 is an apocalyptic number.

12728460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12728460 is an abundant number, since it is smaller than the sum of its proper divisors (22911396).

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

12728460 is a wasteful number, since it uses less digits than its factorization.

12728460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212153 (or 212151 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 12728460 is about 3567.6967359909. The cubic root of 12728460 is about 233.4848041442.

The spelling of 12728460 in words is "twelve million, seven hundred twenty-eight thousand, four hundred sixty".