28456368 has 80 divisors (see below), whose sum is σ = 79744896. Its totient is φ = 8709120.

The previous prime is 28456343. The next prime is 28456369. The reversal of 28456368 is 86365482.

It is not an unprimeable number, because it can be changed into a prime (28456369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34683 + ... + 35493.

Almost surely, 2^28456368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28456368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39872448).

28456368 is an abundant number, since it is smaller than the sum of its proper divisors (51288528).

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

28456368 is a wasteful number, since it uses less digits than its factorization.

28456368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 876 counting only the distinct ones).

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

The square root of 28456368 is about 5334.4510495458. The cubic root of 28456368 is about 305.2997787136.

The spelling of 28456368 in words is "twenty-eight million, four hundred fifty-six thousand, three hundred sixty-eight".