28295028 has 48 divisors (see below), whose sum is σ = 77224000. Its totient is φ = 8934624.

The previous prime is 28295023. The next prime is 28295041. The reversal of 28295028 is 82059282.

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 = 28294983 and 28295001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28295023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4843 + ... + 8946.

Almost surely, 2^28295028 is an apocalyptic number.

It is an amenable number.

28295028 is an abundant number, since it is smaller than the sum of its proper divisors (48928972).

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

28295028 is a wasteful number, since it uses less digits than its factorization.

28295028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13821 (or 13813 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28295028 is about 5319.3070977337. The cubic root of 28295028 is about 304.7216954283.

The spelling of 28295028 in words is "twenty-eight million, two hundred ninety-five thousand, twenty-eight".