28283332 has 48 divisors (see below), whose sum is σ = 62133120. Its totient is φ = 10944000.

The previous prime is 28283327. The next prime is 28283341. The reversal of 28283332 is 23338282.

It is a happy number.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28283294 and 28283303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70332 + ... + 70732.

It is an arithmetic number, because the mean of its divisors is an integer number (1294440).

It is a self-describing number.

Almost surely, 2^28283332 is an apocalyptic number.

28283332 is a gapful number since it is divisible by the number (22) 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 28283332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31066560).

28283332 is an abundant number, since it is smaller than the sum of its proper divisors (33849788).

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

28283332 is a wasteful number, since it uses less digits than its factorization.

28283332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 650 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 28283332 is about 5318.2075927891. The cubic root of 28283332 is about 304.6797031728.

The spelling of 28283332 in words is "twenty-eight million, two hundred eighty-three thousand, three hundred thirty-two".