28002114 has 96 divisors (see below), whose sum is σ = 73322496. Its totient is φ = 7555680.

The previous prime is 28002113. The next prime is 28002119. The reversal of 28002114 is 41120082.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (28002113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261649 + ... + 261755.

It is an arithmetic number, because the mean of its divisors is an integer number (763776).

Almost surely, 2^28002114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28002114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36661248).

28002114 is an abundant number, since it is smaller than the sum of its proper divisors (45320382).

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

28002114 is a wasteful number, since it uses less digits than its factorization.

28002114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 28002114 is about 5291.7023725829. The cubic root of 28002114 is about 303.6665390775. Note that the first 3 decimals are identical.

Adding to 28002114 its reverse (41120082), we get a palindrome (69122196).

The spelling of 28002114 in words is "twenty-eight million, two thousand, one hundred fourteen".