28494992 has 20 divisors (see below), whose sum is σ = 58457196. Its totient is φ = 13409280.

The previous prime is 28494971. The next prime is 28494997. The reversal of 28494992 is 29949482.

It can be written as a sum of positive squares in 2 ways, for example, as 12845056 + 15649936 = 3584^2 + 3956^2 .

It is not an unprimeable number, because it can be changed into a prime (28494997) 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 3 ways as a sum of consecutive naturals, for example, 52109 + ... + 52652.

Almost surely, 2^28494992 is an apocalyptic number.

It is an amenable number.

28494992 is an abundant number, since it is smaller than the sum of its proper divisors (29962204).

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

28494992 is a wasteful number, since it uses less digits than its factorization.

28494992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104786 (or 104780 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 28494992 is about 5338.0700632345. The cubic root of 28494992 is about 305.4378446772.

The spelling of 28494992 in words is "twenty-eight million, four hundred ninety-four thousand, nine hundred ninety-two".