28893528 has 48 divisors (see below), whose sum is σ = 82375800. Its totient is φ = 9123840.

The previous prime is 28893517. The next prime is 28893569. The reversal of 28893528 is 82539882.

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, 9193 + ... + 11928.

Almost surely, 2^28893528 is an apocalyptic number.

It is an amenable number.

28893528 is an abundant number, since it is smaller than the sum of its proper divisors (53482272).

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

28893528 is a wasteful number, since it uses less digits than its factorization.

28893528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21152 (or 21145 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 28893528 is about 5375.2700397282. The cubic root of 28893528 is about 306.8552264018.

The spelling of 28893528 in words is "twenty-eight million, eight hundred ninety-three thousand, five hundred twenty-eight".