28296648 has 64 divisors (see below), whose sum is σ = 79056000. Its totient is φ = 9377856.

The previous prime is 28296629. The next prime is 28296659. The reversal of 28296648 is 84669282.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57861 + ... + 58347.

It is an arithmetic number, because the mean of its divisors is an integer number (1235250).

Almost surely, 2^28296648 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 28296648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39528000).

28296648 is an abundant number, since it is smaller than the sum of its proper divisors (50759352).

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

28296648 is a wasteful number, since it uses less digits than its factorization.

28296648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 761 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 28296648 is about 5319.4593710263. The cubic root of 28296648 is about 304.7275108167.

The spelling of 28296648 in words is "twenty-eight million, two hundred ninety-six thousand, six hundred forty-eight".