28558464 has 64 divisors (see below), whose sum is σ = 82766880. Its totient is φ = 8652800.

The previous prime is 28558441. The next prime is 28558477. The reversal of 28558464 is 46485582.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844 + ... + 7604.

Almost surely, 2^28558464 is an apocalyptic number.

28558464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28558464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41383440).

28558464 is an abundant number, since it is smaller than the sum of its proper divisors (54208416).

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

28558464 is a wasteful number, since it uses less digits than its factorization.

28558464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6789 (or 6777 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 28558464 is about 5344.0119760345. The cubic root of 28558464 is about 305.6644619735.

The spelling of 28558464 in words is "twenty-eight million, five hundred fifty-eight thousand, four hundred sixty-four".