28847560 has 64 divisors (see below), whose sum is σ = 74649600. Its totient is φ = 9828096.

The previous prime is 28847551. The next prime is 28847573. The reversal of 28847560 is 6574882.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75129 + ... + 75511.

It is an arithmetic number, because the mean of its divisors is an integer number (1166400).

Almost surely, 2^28847560 is an apocalyptic number.

28847560 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 28847560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37324800).

28847560 is an abundant number, since it is smaller than the sum of its proper divisors (45802040).

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

28847560 is a wasteful number, since it uses less digits than its factorization.

28847560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 28847560 is about 5370.9924594995. The cubic root of 28847560 is about 306.6924101472.

The spelling of 28847560 in words is "twenty-eight million, eight hundred forty-seven thousand, five hundred sixty".