28107560 has 64 divisors (see below), whose sum is σ = 68705280. Its totient is φ = 10287360.

The previous prime is 28107559. The next prime is 28107577. The reversal of 28107560 is 6570182.

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, 99179 + ... + 99461.

It is an arithmetic number, because the mean of its divisors is an integer number (1073520).

Almost surely, 2^28107560 is an apocalyptic number.

28107560 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 28107560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34352640).

28107560 is an abundant number, since it is smaller than the sum of its proper divisors (40597720).

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

28107560 is a wasteful number, since it uses less digits than its factorization.

28107560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 28107560 is about 5301.6563449548. The cubic root of 28107560 is about 304.0472283503.

The spelling of 28107560 in words is "twenty-eight million, one hundred seven thousand, five hundred sixty".