28075456 has 28 divisors (see below), whose sum is σ = 58137552. Its totient is φ = 13426688.

The previous prime is 28075427. The next prime is 28075471. The reversal of 28075456 is 65457082.

It is a happy number.

It is a Smith number, since the sum of its digits (37) 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, 8065 + ... + 11008.

Almost surely, 2^28075456 is an apocalyptic number.

It is an amenable number.

28075456 is an abundant number, since it is smaller than the sum of its proper divisors (30062096).

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

28075456 is a wasteful number, since it uses less digits than its factorization.

28075456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19108 (or 19098 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 28075456 is about 5298.6277468794. The cubic root of 28075456 is about 303.9314249755.

The spelling of 28075456 in words is "twenty-eight million, seventy-five thousand, four hundred fifty-six".