28333332 has 72 divisors (see below), whose sum is σ = 78711360. Its totient is φ = 8553600.

The previous prime is 28333307. The next prime is 28333367. The reversal of 28333332 is 23333382.

It is a junction number, because it is equal to n+sod(n) for n = 28333296 and 28333305.

It is a congruent number.

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, 14832 + ... + 16632.

Almost surely, 2^28333332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28333332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39355680).

28333332 is an abundant number, since it is smaller than the sum of its proper divisors (50378028).

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

28333332 is a wasteful number, since it uses less digits than its factorization.

28333332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853 (or 1848 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

The square root of 28333332 is about 5322.9063489789. The cubic root of 28333332 is about 304.8591376769.

The spelling of 28333332 in words is "twenty-eight million, three hundred thirty-three thousand, three hundred thirty-two".