28549022 has 8 divisors (see below), whose sum is σ = 43734816. Its totient is φ = 13970752.

The previous prime is 28549013. The next prime is 28549051. The reversal of 28549022 is 22094582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28549022.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 151763 + ... + 151950.

It is an arithmetic number, because the mean of its divisors is an integer number (5466852).

Almost surely, 2^28549022 is an apocalyptic number.

28549022 is a deficient number, since it is larger than the sum of its proper divisors (15185794).

28549022 is a wasteful number, since it uses less digits than its factorization.

28549022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303762.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28549022 is about 5343.1284843245. The cubic root of 28549022 is about 305.6307719966.

The spelling of 28549022 in words is "twenty-eight million, five hundred forty-nine thousand, twenty-two".