12828278 has 8 divisors (see below), whose sum is σ = 19262568. Its totient is φ = 6407424.

The previous prime is 12828271. The next prime is 12828293. The reversal of 12828278 is 87282821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×12828278³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12828271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476 + ... + 5087.

It is an arithmetic number, because the mean of its divisors is an integer number (2407821).

Almost surely, 2^12828278 is an apocalyptic number.

12828278 is a deficient number, since it is larger than the sum of its proper divisors (6434290).

12828278 is a wasteful number, since it uses less digits than its factorization.

12828278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6718.

The product of its digits is 28672, while the sum is 38.

The square root of 12828278 is about 3581.6585543572. The cubic root of 12828278 is about 234.0935535533.

The spelling of 12828278 in words is "twelve million, eight hundred twenty-eight thousand, two hundred seventy-eight".