28760328 has 48 divisors (see below), whose sum is σ = 82477980. Its totient is φ = 9022464.

The previous prime is 28760323. The next prime is 28760363. The reversal of 28760328 is 82306782.

It is a happy number.

28760328 is a `hidden beast` number, since 28 + 7 + 603 + 28 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26193924 + 2566404 = 5118^2 + 1602^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28760292 and 28760301.

It is not an unprimeable number, because it can be changed into a prime (28760323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10525 + ... + 12972.

Almost surely, 2^28760328 is an apocalyptic number.

It is an amenable number.

28760328 is an abundant number, since it is smaller than the sum of its proper divisors (53717652).

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

28760328 is a wasteful number, since it uses less digits than its factorization.

28760328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23526 (or 23519 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28760328 is about 5362.8656518693. The cubic root of 28760328 is about 306.3829627832.

The spelling of 28760328 in words is "twenty-eight million, seven hundred sixty thousand, three hundred twenty-eight".