28333860 has 48 divisors (see below), whose sum is σ = 81485376. Its totient is φ = 7350912.

The previous prime is 28333843. The next prime is 28333871. The reversal of 28333860 is 6833382.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4162 + ... + 8601.

It is an arithmetic number, because the mean of its divisors is an integer number (1697612).

Almost surely, 2^28333860 is an apocalyptic number.

28333860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28333860 is an abundant number, since it is smaller than the sum of its proper divisors (53151516).

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

28333860 is a wasteful number, since it uses less digits than its factorization.

28333860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12812 (or 12810 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 28333860 is about 5322.9559457129. The cubic root of 28333860 is about 304.8610313785.

It can be divided in two parts, 283 and 33860, that added together give a palindrome (34143).

The spelling of 28333860 in words is "twenty-eight million, three hundred thirty-three thousand, eight hundred sixty".