28260860 has 12 divisors (see below), whose sum is σ = 59347848. Its totient is φ = 11304336.

The previous prime is 28260829. The next prime is 28260863. The reversal of 28260860 is 6806282.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28260863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706502 + ... + 706541.

It is an arithmetic number, because the mean of its divisors is an integer number (4945654).

Almost surely, 2^28260860 is an apocalyptic number.

28260860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28260860 is an abundant number, since it is smaller than the sum of its proper divisors (31086988).

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

28260860 is a wasteful number, since it uses less digits than its factorization.

28260860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413052 (or 1413050 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28260860 is about 5316.0944310650. The cubic root of 28260860 is about 304.5989892455.

The spelling of 28260860 in words is "twenty-eight million, two hundred sixty thousand, eight hundred sixty".