28086456 has 32 divisors (see below), whose sum is σ = 70352640. Its totient is φ = 9343968.

The previous prime is 28086451. The next prime is 28086463. The reversal of 28086456 is 65468082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28086451) 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 7 ways as a sum of consecutive naturals, for example, 18145 + ... + 19631.

It is an arithmetic number, because the mean of its divisors is an integer number (2198520).

Almost surely, 2^28086456 is an apocalyptic number.

It is an amenable number.

28086456 is an abundant number, since it is smaller than the sum of its proper divisors (42266184).

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

28086456 is a wasteful number, since it uses less digits than its factorization.

28086456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 28086456 is about 5299.6656498311. The cubic root of 28086456 is about 303.9711133679.

It can be divided in two parts, 280 and 86456, that added together give a triangular number (86736 = T₄₁₆).

The spelling of 28086456 in words is "twenty-eight million, eighty-six thousand, four hundred fifty-six".