28806260 has 24 divisors (see below), whose sum is σ = 69135360. Its totient is φ = 9876384.

The previous prime is 28806247. The next prime is 28806263. The reversal of 28806260 is 6260882.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28806263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102740 + ... + 103019.

It is an arithmetic number, because the mean of its divisors is an integer number (2880640).

Almost surely, 2^28806260 is an apocalyptic number.

28806260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28806260 is an abundant number, since it is smaller than the sum of its proper divisors (40329100).

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

28806260 is a wasteful number, since it uses less digits than its factorization.

28806260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205775 (or 205773 counting only the distinct ones).

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

The square root of 28806260 is about 5367.1463553736. The cubic root of 28806260 is about 306.5459801311.

The spelling of 28806260 in words is "twenty-eight million, eight hundred six thousand, two hundred sixty".