28119312 has 100 divisors (see below), whose sum is σ = 87698380. Its totient is φ = 8646912.

The previous prime is 28119277. The next prime is 28119319. The reversal of 28119312 is 21391182.

It can be written as a sum of positive squares in 2 ways, for example, as 9144576 + 18974736 = 3024^2 + 4356^2 .

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28119319) 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, 16014 + ... + 17682.

Almost surely, 2^28119312 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 28119312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43849190).

28119312 is an abundant number, since it is smaller than the sum of its proper divisors (59579068).

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

28119312 is a wasteful number, since it uses less digits than its factorization.

28119312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702 (or 1687 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 28119312 is about 5302.7645619997. The cubic root of 28119312 is about 304.0895973209.

The spelling of 28119312 in words is "twenty-eight million, one hundred nineteen thousand, three hundred twelve".