28805260 has 36 divisors (see below), whose sum is σ = 66495744. Its totient is φ = 10473760.

The previous prime is 28805239. The next prime is 28805267. The reversal of 28805260 is 6250882.

It is not an unprimeable number, because it can be changed into a prime (28805267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3532 + ... + 8371.

It is an arithmetic number, because the mean of its divisors is an integer number (1847104).

Almost surely, 2^28805260 is an apocalyptic number.

28805260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28805260 is an abundant number, since it is smaller than the sum of its proper divisors (37690484).

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

28805260 is a wasteful number, since it uses less digits than its factorization.

28805260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11934 (or 11921 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 28805260 is about 5367.0531951901. The cubic root of 28805260 is about 306.5424328752.

The spelling of 28805260 in words is "twenty-eight million, eight hundred five thousand, two hundred sixty".