28449892 has 12 divisors (see below), whose sum is σ = 51133180. Its totient is φ = 13840416.

The previous prime is 28449887. The next prime is 28449893. The reversal of 28449892 is 29894482.

It can be written as a sum of positive squares in 2 ways, for example, as 20016676 + 8433216 = 4474^2 + 2904^2 .

It is not an unprimeable number, because it can be changed into a prime (28449893) 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, 95967 + ... + 96262.

Almost surely, 2^28449892 is an apocalyptic number.

It is an amenable number.

28449892 is a deficient number, since it is larger than the sum of its proper divisors (22683288).

28449892 is a wasteful number, since it uses less digits than its factorization.

28449892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192270 (or 192268 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 28449892 is about 5333.8440172169. The cubic root of 28449892 is about 305.2766172738.

It can be divided in two parts, 284 and 49892, that added together give a square (50176 = 224²).

The spelling of 28449892 in words is "twenty-eight million, four hundred forty-nine thousand, eight hundred ninety-two".