28676787 has 8 divisors (see below), whose sum is σ = 38308560. Its totient is φ = 19081440.

The previous prime is 28676783. The next prime is 28676803. The reversal of 28676787 is 78767682.

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

It is not a de Polignac number, because 28676787 - 2² = 28676783 is a prime.

It is a super-2 number, since 2×28676787² = 1644716225286738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28676783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7212 + ... + 10457.

It is an arithmetic number, because the mean of its divisors is an integer number (4788570).

Almost surely, 2^28676787 is an apocalyptic number.

28676787 is a deficient number, since it is larger than the sum of its proper divisors (9631773).

28676787 is a wasteful number, since it uses less digits than its factorization.

28676787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18213.

The product of its digits is 1580544, while the sum is 51.

The square root of 28676787 is about 5355.0711479867. The cubic root of 28676787 is about 306.0860217808.

The spelling of 28676787 in words is "twenty-eight million, six hundred seventy-six thousand, seven hundred eighty-seven".