28532898 has 20 divisors (see below), whose sum is σ = 63935190. Its totient is φ = 9510912.

The previous prime is 28532893. The next prime is 28532899. The reversal of 28532898 is 89823582.

28532898 is a `hidden beast` number, since 28 + 532 + 8 + 98 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22496049 + 6036849 = 4743^2 + 2457^2 .

It is not an unprimeable number, because it can be changed into a prime (28532891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 87903 + ... + 88226.

Almost surely, 2^28532898 is an apocalyptic number.

28532898 is an abundant number, since it is smaller than the sum of its proper divisors (35402292).

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

28532898 is a wasteful number, since it uses less digits than its factorization.

28532898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176143 (or 176134 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 28532898 is about 5341.6194173677. The cubic root of 28532898 is about 305.5732228144.

The spelling of 28532898 in words is "twenty-eight million, five hundred thirty-two thousand, eight hundred ninety-eight".