28549242 has 48 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 9240000.

The previous prime is 28549217. The next prime is 28549259. The reversal of 28549242 is 24294582.

It is a junction number, because it is equal to n+sod(n) for n = 28549197 and 28549206.

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 23 ways as a sum of consecutive naturals, for example, 113617 + ... + 113867.

It is an arithmetic number, because the mean of its divisors is an integer number (1326780).

Almost surely, 2^28549242 is an apocalyptic number.

28549242 is an abundant number, since it is smaller than the sum of its proper divisors (35136198).

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

28549242 is a wasteful number, since it uses less digits than its factorization.

28549242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 416 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28549242 is about 5343.1490714746. The cubic root of 28549242 is about 305.6315570626.

The spelling of 28549242 in words is "twenty-eight million, five hundred forty-nine thousand, two hundred forty-two".