28675764 has 72 divisors (see below), whose sum is σ = 79252992. Its totient is φ = 8688960.

The previous prime is 28675741. The next prime is 28675771. The reversal of 28675764 is 46757682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32797 + ... + 33659.

It is an arithmetic number, because the mean of its divisors is an integer number (1100736).

Almost surely, 2^28675764 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 28675764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39626496).

28675764 is an abundant number, since it is smaller than the sum of its proper divisors (50577228).

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

28675764 is a wasteful number, since it uses less digits than its factorization.

28675764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 952 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 28675764 is about 5354.9756301966. The cubic root of 28675764 is about 306.0823820224.

The spelling of 28675764 in words is "twenty-eight million, six hundred seventy-five thousand, seven hundred sixty-four".