28687360 has 88 divisors (see below), whose sum is σ = 74281536. Its totient is φ = 10567680.

The previous prime is 28687357. The next prime is 28687367. The reversal of 28687360 is 6378682.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28687367) 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 7 ways as a sum of consecutive naturals, for example, 66345 + ... + 66775.

Almost surely, 2^28687360 is an apocalyptic number.

28687360 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 28687360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37140768).

28687360 is an abundant number, since it is smaller than the sum of its proper divisors (45594176).

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

28687360 is a wasteful number, since it uses less digits than its factorization.

28687360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 28687360 is about 5356.0582521104. The cubic root of 28687360 is about 306.1236346633.

The spelling of 28687360 in words is "twenty-eight million, six hundred eighty-seven thousand, three hundred sixty".