28871360 has 56 divisors (see below), whose sum is σ = 78577440. Its totient is φ = 9897984.

The previous prime is 28871357. The next prime is 28871363. The reversal of 28871360 is 6317882.

It is an interprime number because it is at equal distance from previous prime (28871357) and next prime (28871363).

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 28871360.

It is not an unprimeable number, because it can be changed into a prime (28871363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4205 + ... + 8684.

Almost surely, 2^28871360 is an apocalyptic number.

28871360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28871360 is an abundant number, since it is smaller than the sum of its proper divisors (49706080).

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

28871360 is a wasteful number, since it uses less digits than its factorization.

28871360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913 (or 12903 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 28871360 is about 5373.2076081238. The cubic root of 28871360 is about 306.7767300795.

The spelling of 28871360 in words is "twenty-eight million, eight hundred seventy-one thousand, three hundred sixty".