28340718 has 64 divisors (see below), whose sum is σ = 67737600. Its totient is φ = 7898016.

The previous prime is 28340681. The next prime is 28340749. The reversal of 28340718 is 81704382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96580 + ... + 96872.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^28340718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28340718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33868800).

28340718 is an abundant number, since it is smaller than the sum of its proper divisors (39396882).

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

28340718 is a wasteful number, since it uses less digits than its factorization.

28340718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28340718 is about 5323.6000976783. The cubic root of 28340718 is about 304.8856258424.

The spelling of 28340718 in words is "twenty-eight million, three hundred forty thousand, seven hundred eighteen".