28494456 has 32 divisors (see below), whose sum is σ = 73536000. Its totient is φ = 9191520.

The previous prime is 28494451. The next prime is 28494457. The reversal of 28494456 is 65449482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28494451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18406 + ... + 19893.

It is an arithmetic number, because the mean of its divisors is an integer number (2298000).

Almost surely, 2^28494456 is an apocalyptic number.

It is an amenable number.

28494456 is an abundant number, since it is smaller than the sum of its proper divisors (45041544).

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

28494456 is a wasteful number, since it uses less digits than its factorization.

28494456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38339 (or 38335 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 28494456 is about 5338.0198575876. The cubic root of 28494456 is about 305.4359295370.

The spelling of 28494456 in words is "twenty-eight million, four hundred ninety-four thousand, four hundred fifty-six".