8128560 has 80 divisors (see below), whose sum is σ = 27498240. Its totient is φ = 1969920.

The previous prime is 8128543. The next prime is 8128579. The reversal of 8128560 is 658218.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1101 + ... + 4179.

It is an arithmetic number, because the mean of its divisors is an integer number (343728).

Almost surely, 2^8128560 is an apocalyptic number.

8128560 is a gapful number since it is divisible by the number (80) 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 8128560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13749120).

8128560 is an abundant number, since it is smaller than the sum of its proper divisors (19369680).

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

8128560 is a wasteful number, since it uses less digits than its factorization.

8128560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 8128560 is about 2851.0629596696. The cubic root of 8128560 is about 201.0656452498.

The spelling of 8128560 in words is "eight million, one hundred twenty-eight thousand, five hundred sixty".