28675680 has 96 divisors (see below), whose sum is σ = 98558208. Its totient is φ = 6950400.

The previous prime is 28675663. The next prime is 28675697. The reversal of 28675680 is 8657682.

It is an interprime number because it is at equal distance from previous prime (28675663) and next prime (28675697).

It is a tau number, because it is divible by the number of its divisors (96).

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, 2565 + ... + 7995.

It is an arithmetic number, because the mean of its divisors is an integer number (1026648).

Almost surely, 2^28675680 is an apocalyptic number.

28675680 is a gapful number since it is divisible by the number (20) 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 28675680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49279104).

28675680 is an abundant number, since it is smaller than the sum of its proper divisors (69882528).

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

28675680 is a wasteful number, since it uses less digits than its factorization.

28675680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460 (or 5452 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 28675680 is about 5354.9677870180. The cubic root of 28675680 is about 306.0820831528.

The spelling of 28675680 in words is "twenty-eight million, six hundred seventy-five thousand, six hundred eighty".