28368756 has 36 divisors (see below), whose sum is σ = 77227332. Its totient is φ = 8728704.

The previous prime is 28368731. The next prime is 28368787. The reversal of 28368756 is 65786382.

It can be written as a sum of positive squares in 2 ways, for example, as 3027600 + 25341156 = 1740^2 + 5034^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29841 + ... + 30776.

Almost surely, 2^28368756 is an apocalyptic number.

28368756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28368756 is an abundant number, since it is smaller than the sum of its proper divisors (48858576).

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

28368756 is a wasteful number, since it uses less digits than its factorization.

28368756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60640 (or 60635 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 28368756 is about 5326.2328150392. The cubic root of 28368756 is about 304.9861357131.

The spelling of 28368756 in words is "twenty-eight million, three hundred sixty-eight thousand, seven hundred fifty-six".