28572648 has 64 divisors (see below), whose sum is σ = 81466560. Its totient is φ = 8272896.

The previous prime is 28572623. The next prime is 28572679. The reversal of 28572648 is 84627582.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2611 + ... + 7997.

It is an arithmetic number, because the mean of its divisors is an integer number (1272915).

Almost surely, 2^28572648 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 28572648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40733280).

28572648 is an abundant number, since it is smaller than the sum of its proper divisors (52893912).

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

28572648 is a wasteful number, since it uses less digits than its factorization.

28572648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5426 (or 5422 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 28572648 is about 5345.3389041295. The cubic root of 28572648 is about 305.7150579154.

The spelling of 28572648 in words is "twenty-eight million, five hundred seventy-two thousand, six hundred forty-eight".