28286464 has 40 divisors (see below), whose sum is σ = 57181608. Its totient is φ = 13977600.

The previous prime is 28286441. The next prime is 28286501. The reversal of 28286464 is 46468282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51439 + ... + 51985.

Almost surely, 2^28286464 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 28286464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28590804).

28286464 is an abundant number, since it is smaller than the sum of its proper divisors (28895144).

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

28286464 is an equidigital number, since it uses as much as digits as its factorization.

28286464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 650 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 28286464 is about 5318.5020447491. The cubic root of 28286464 is about 304.6909491558.

The spelling of 28286464 in words is "twenty-eight million, two hundred eighty-six thousand, four hundred sixty-four".