28808697 has 16 divisors (see below), whose sum is σ = 39905280. Its totient is φ = 18473232.

The previous prime is 28808671. The next prime is 28808699. The reversal of 28808697 is 79680882.

It is a happy number.

It is not a de Polignac number, because 28808697 - 2⁸ = 28808441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28808699) 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 15 ways as a sum of consecutive naturals, for example, 6588 + ... + 10050.

It is an arithmetic number, because the mean of its divisors is an integer number (2494080).

Almost surely, 2^28808697 is an apocalyptic number.

It is an amenable number.

28808697 is a deficient number, since it is larger than the sum of its proper divisors (11096583).

28808697 is a wasteful number, since it uses less digits than its factorization.

28808697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 28808697 is about 5367.3733799690. The cubic root of 28808697 is about 306.5546244500.

The spelling of 28808697 in words is "twenty-eight million, eight hundred eight thousand, six hundred ninety-seven".