28380114 has 72 divisors (see below), whose sum is σ = 74692800. Its totient is φ = 7750512.

The previous prime is 28380113. The next prime is 28380139. The reversal of 28380114 is 41108382.

It is not an unprimeable number, because it can be changed into a prime (28380113) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19587 + ... + 20985.

It is an arithmetic number, because the mean of its divisors is an integer number (1037400).

Almost surely, 2^28380114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28380114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37346400).

28380114 is an abundant number, since it is smaller than the sum of its proper divisors (46312686).

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

28380114 is a wasteful number, since it uses less digits than its factorization.

28380114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 28380114 is about 5327.2989403637. The cubic root of 28380114 is about 305.0268327195.

Adding to 28380114 its reverse (41108382), we get a palindrome (69488496).

The spelling of 28380114 in words is "twenty-eight million, three hundred eighty thousand, one hundred fourteen".