28835520 has 168 divisors, whose sum is σ = 106673904. Its totient is φ = 6580224.

The previous prime is 28835503. The next prime is 28835539. The reversal of 28835520 is 2553882.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46734 + ... + 47346.

Almost surely, 2^28835520 is an apocalyptic number.

28835520 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 28835520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53336952).

28835520 is an abundant number, since it is smaller than the sum of its proper divisors (77838384).

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

28835520 is a wasteful number, since it uses less digits than its factorization.

28835520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 28835520 is about 5369.8715068426. The cubic root of 28835520 is about 306.6497365155.

The spelling of 28835520 in words is "twenty-eight million, eight hundred thirty-five thousand, five hundred twenty".