28849178 has 8 divisors (see below), whose sum is σ = 43322580. Its totient is φ = 14408320.

The previous prime is 28849169. The next prime is 28849181. The reversal of 28849178 is 87194882.

It can be written as a sum of positive squares in 2 ways, for example, as 27952369 + 896809 = 5287^2 + 947^2 .

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

It is an unprimeable number.

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, 5783 + ... + 9546.

Almost surely, 2^28849178 is an apocalyptic number.

28849178 is a deficient number, since it is larger than the sum of its proper divisors (14473402).

28849178 is a wasteful number, since it uses less digits than its factorization.

28849178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16272.

The product of its digits is 258048, while the sum is 47.

The square root of 28849178 is about 5371.1430813189. The cubic root of 28849178 is about 306.6981439544.

The spelling of 28849178 in words is "twenty-eight million, eight hundred forty-nine thousand, one hundred seventy-eight".