28786576 has 80 divisors (see below), whose sum is σ = 72745344. Its totient is φ = 10708992.

The previous prime is 28786523. The next prime is 28786591. The reversal of 28786576 is 67568782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24171 + ... + 25333.

Almost surely, 2^28786576 is an apocalyptic number.

28786576 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28786576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36372672).

28786576 is an abundant number, since it is smaller than the sum of its proper divisors (43958768).

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

28786576 is a wasteful number, since it uses less digits than its factorization.

28786576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208 (or 1202 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 49.

The square root of 28786576 is about 5365.3122928680. The cubic root of 28786576 is about 306.4761408439.

The spelling of 28786576 in words is "twenty-eight million, seven hundred eighty-six thousand, five hundred seventy-six".