28335312 has 80 divisors (see below), whose sum is σ = 82226880. Its totient is φ = 9341568.

The previous prime is 28335283. The next prime is 28335317. The reversal of 28335312 is 21353382.

It is a super-2 number, since 2×28335312² = 1605779812274688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28335317) 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 15 ways as a sum of consecutive naturals, for example, 45918 + ... + 46530.

It is an arithmetic number, because the mean of its divisors is an integer number (1027836).

Almost surely, 2^28335312 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 28335312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41113440).

28335312 is an abundant number, since it is smaller than the sum of its proper divisors (53891568).

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

28335312 is a wasteful number, since it uses less digits than its factorization.

28335312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 725 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 28335312 is about 5323.0923343485. The cubic root of 28335312 is about 304.8662389365.

Adding to 28335312 its reverse (21353382), we get a palindrome (49688694).

The spelling of 28335312 in words is "twenty-eight million, three hundred thirty-five thousand, three hundred twelve".