28508698 has 8 divisors (see below), whose sum is σ = 42788340. Its totient is φ = 14245920.

The previous prime is 28508693. The next prime is 28508713. The reversal of 28508698 is 89680582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28376929 + 131769 = 5327^2 + 363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28508693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1638 + ... + 7726.

Almost surely, 2^28508698 is an apocalyptic number.

28508698 is a deficient number, since it is larger than the sum of its proper divisors (14279642).

28508698 is a wasteful number, since it uses less digits than its factorization.

28508698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 28508698 is about 5339.3537062083. The cubic root of 28508698 is about 305.4868083696.

The spelling of 28508698 in words is "twenty-eight million, five hundred eight thousand, six hundred ninety-eight".