28672768 has 36 divisors (see below), whose sum is σ = 59096128. Its totient is φ = 13870080.

The previous prime is 28672751. The next prime is 28672811. The reversal of 28672768 is 86727682.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6130 + ... + 9742.

Almost surely, 2^28672768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28672768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29548064).

28672768 is an abundant number, since it is smaller than the sum of its proper divisors (30423360).

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

28672768 is an equidigital number, since it uses as much as digits as its factorization.

28672768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660 (or 3646 counting only the distinct ones).

The product of its digits is 451584, while the sum is 46.

The square root of 28672768 is about 5354.6958830544. The cubic root of 28672768 is about 306.0717219780.

The spelling of 28672768 in words is "twenty-eight million, six hundred seventy-two thousand, seven hundred sixty-eight".