28305060 has 96 divisors (see below), whose sum is σ = 95370240. Its totient is φ = 6127488.

The previous prime is 28305029. The next prime is 28305061. The reversal of 28305060 is 6050382.

28305060 = 168² + 169² + ... + 447².

It is a self number, because there is not a number n which added to its sum of digits gives 28305060.

It is not an unprimeable number, because it can be changed into a prime (28305061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6207 + ... + 9753.

It is an arithmetic number, because the mean of its divisors is an integer number (993440).

Almost surely, 2^28305060 is an apocalyptic number.

28305060 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 28305060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47685120).

28305060 is an abundant number, since it is smaller than the sum of its proper divisors (67065180).

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

28305060 is a wasteful number, since it uses less digits than its factorization.

28305060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585 (or 3583 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 28305060 is about 5320.2499941262. The cubic root of 28305060 is about 304.7577041909.

The spelling of 28305060 in words is "twenty-eight million, three hundred five thousand, sixty".