28549190 has 8 divisors (see below), whose sum is σ = 51388560. Its totient is φ = 11419672.

The previous prime is 28549189. The next prime is 28549193. The reversal of 28549190 is 9194582.

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

It is a super-2 number, since 2×28549190² = 1630112499312200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28549193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427450 + ... + 1427469.

It is an arithmetic number, because the mean of its divisors is an integer number (6423570).

Almost surely, 2^28549190 is an apocalyptic number.

28549190 is a deficient number, since it is larger than the sum of its proper divisors (22839370).

28549190 is a wasteful number, since it uses less digits than its factorization.

28549190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854926.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 28549190 is about 5343.1442054281. The cubic root of 28549190 is about 305.6313715019.

The spelling of 28549190 in words is "twenty-eight million, five hundred forty-nine thousand, one hundred ninety".