28433268 has 60 divisors (see below), whose sum is σ = 75023872. Its totient is φ = 9389520.

The previous prime is 28433263. The next prime is 28433269. The reversal of 28433268 is 86233482.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28433263) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40803 + ... + 41493.

Almost surely, 2^28433268 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 28433268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37511936).

28433268 is an abundant number, since it is smaller than the sum of its proper divisors (46590604).

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

28433268 is a wasteful number, since it uses less digits than its factorization.

28433268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 823 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28433268 is about 5332.2854387214. The cubic root of 28433268 is about 305.2171453752.

The spelling of 28433268 in words is "twenty-eight million, four hundred thirty-three thousand, two hundred sixty-eight".