28333116 has 72 divisors (see below), whose sum is σ = 84695520. Its totient is φ = 7814016.

The previous prime is 28333103. The next prime is 28333117. The reversal of 28333116 is 61133382.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28333116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28333117) 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 23 ways as a sum of consecutive naturals, for example, 5370 + ... + 9246.

Almost surely, 2^28333116 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 28333116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42347760).

28333116 is an abundant number, since it is smaller than the sum of its proper divisors (56362404).

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

28333116 is a wasteful number, since it uses less digits than its factorization.

28333116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923 (or 3918 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 28333116 is about 5322.8860592727. The cubic root of 28333116 is about 304.8583629741.

Adding to 28333116 its reverse (61133382), we get a palindrome (89466498).

The spelling of 28333116 in words is "twenty-eight million, three hundred thirty-three thousand, one hundred sixteen".