28711360 has 112 divisors (see below), whose sum is σ = 73737216. Its totient is φ = 10621952.

The previous prime is 28711349. The next prime is 28711367. The reversal of 28711360 is 6311782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28711367) 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, 345879 + ... + 345961.

It is an arithmetic number, because the mean of its divisors is an integer number (658368).

Almost surely, 2^28711360 is an apocalyptic number.

28711360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28711360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36868608).

28711360 is an abundant number, since it is smaller than the sum of its proper divisors (45025856).

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

28711360 is a wasteful number, since it uses less digits than its factorization.

28711360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 28711360 is about 5358.2982373138. The cubic root of 28711360 is about 306.2089790954.

The spelling of 28711360 in words is "twenty-eight million, seven hundred eleven thousand, three hundred sixty".