28260456 has 64 divisors (see below), whose sum is σ = 82416000. Its totient is φ = 8072064.

The previous prime is 28260431. The next prime is 28260473. The reversal of 28260456 is 65406282.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6516 + ... + 9948.

It is an arithmetic number, because the mean of its divisors is an integer number (1287750).

Almost surely, 2^28260456 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 28260456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41208000).

28260456 is an abundant number, since it is smaller than the sum of its proper divisors (54155544).

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

28260456 is a wasteful number, since it uses less digits than its factorization.

28260456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463 (or 3445 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 28260456 is about 5316.0564331090. The cubic root of 28260456 is about 304.5975377848.

The spelling of 28260456 in words is "twenty-eight million, two hundred sixty thousand, four hundred fifty-six".