28453328 has 20 divisors (see below), whose sum is σ = 56033988. Its totient is φ = 13992960.

The previous prime is 28453297. The next prime is 28453343. The reversal of 28453328 is 82335482.

It can be written as a sum of positive squares in 2 ways, for example, as 659344 + 27793984 = 812^2 + 5272^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 13601 + ... + 15552.

Almost surely, 2^28453328 is an apocalyptic number.

It is an amenable number.

28453328 is a deficient number, since it is larger than the sum of its proper divisors (27580660).

28453328 is a wasteful number, since it uses less digits than its factorization.

28453328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29222 (or 29216 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 28453328 is about 5334.1661016508. The cubic root of 28453328 is about 305.2889065791.

The spelling of 28453328 in words is "twenty-eight million, four hundred fifty-three thousand, three hundred twenty-eight".