28042848 has 120 divisors (see below), whose sum is σ = 85377600. Its totient is φ = 9020160.

The previous prime is 28042823. The next prime is 28042849. The reversal of 28042848 is 84824082.

It is a super-2 number, since 2×28042848² = 1572802647902208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28042849) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 80178 + ... + 80526.

It is an arithmetic number, because the mean of its divisors is an integer number (711480).

Almost surely, 2^28042848 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 28042848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42688800).

28042848 is an abundant number, since it is smaller than the sum of its proper divisors (57334752).

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

28042848 is a wasteful number, since it uses less digits than its factorization.

28042848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 28042848 is about 5295.5498298099. The cubic root of 28042848 is about 303.8137132010.

The spelling of 28042848 in words is "twenty-eight million, forty-two thousand, eight hundred forty-eight".