28080507 has 16 divisors (see below), whose sum is σ = 46081280. Its totient is φ = 14811552.

The previous prime is 28080473. The next prime is 28080511. The reversal of 28080507 is 70508082.

It is not a de Polignac number, because 28080507 - 2²⁴ = 11303291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28080517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51157 + ... + 51702.

It is an arithmetic number, because the mean of its divisors is an integer number (2880080).

Almost surely, 2^28080507 is an apocalyptic number.

28080507 is a deficient number, since it is larger than the sum of its proper divisors (18000773).

28080507 is a wasteful number, since it uses less digits than its factorization.

28080507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102882.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 28080507 is about 5299.1043582855. The cubic root of 28080507 is about 303.9496504506.

Adding to 28080507 its reverse (70508082), we get a palindrome (98588589).

The spelling of 28080507 in words is "twenty-eight million, eighty thousand, five hundred seven".