28570048 has 56 divisors (see below), whose sum is σ = 63751968. Its totient is φ = 12604416.

The previous prime is 28570039. The next prime is 28570063. The reversal of 28570048 is 84007582.

It is a junction number, because it is equal to n+sod(n) for n = 28569995 and 28570022.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 18390 + ... + 19882.

It is an arithmetic number, because the mean of its divisors is an integer number (1138428).

Almost surely, 2^28570048 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 28570048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31875984).

28570048 is an abundant number, since it is smaller than the sum of its proper divisors (35181920).

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

28570048 is a wasteful number, since it uses less digits than its factorization.

28570048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541 (or 1531 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 28570048 is about 5345.0956960563. The cubic root of 28570048 is about 305.7057846731.

The spelling of 28570048 in words is "twenty-eight million, five hundred seventy thousand, forty-eight".