28033560 has 128 divisors (see below), whose sum is σ = 94737600. Its totient is φ = 7372800.

The previous prime is 28033547. The next prime is 28033567. The reversal of 28033560 is 6533082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28033567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108952 + ... + 109208.

Almost surely, 2^28033560 is an apocalyptic number.

28033560 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 28033560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47368800).

28033560 is an abundant number, since it is smaller than the sum of its proper divisors (66704040).

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

28033560 is a wasteful number, since it uses less digits than its factorization.

28033560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 28033560 is about 5294.6727944227. The cubic root of 28033560 is about 303.7801677094.

The spelling of 28033560 in words is "twenty-eight million, thirty-three thousand, five hundred sixty".