12728496 has 40 divisors (see below), whose sum is σ = 35872704. Its totient is φ = 3856960.

The previous prime is 12728479. The next prime is 12728503. The reversal of 12728496 is 69482721.

It is a super-2 number, since 2×12728496² = 324029220844032, which contains 22 as substring.

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, 11526 + ... + 12581.

Almost surely, 2^12728496 is an apocalyptic number.

12728496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12728496 is an abundant number, since it is smaller than the sum of its proper divisors (23144208).

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

12728496 is a wasteful number, since it uses less digits than its factorization.

12728496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24129 (or 24123 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 12728496 is about 3567.7017812592. The cubic root of 12728496 is about 233.4850242662.

Adding to 12728496 its sum of digits (39), we get a triangular number (12728535 = T₅₀₄₅).

The spelling of 12728496 in words is "twelve million, seven hundred twenty-eight thousand, four hundred ninety-six".