28829186 has 4 divisors (see below), whose sum is σ = 43243782. Its totient is φ = 14414592.

The previous prime is 28829173. The next prime is 28829197. The reversal of 28829186 is 68192882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28826161 + 3025 = 5369^2 + 55^2 .

It is a super-2 number, since 2×28829186² = 1662243930845192, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 7207295 + ... + 7207298.

Almost surely, 2^28829186 is an apocalyptic number.

28829186 is a deficient number, since it is larger than the sum of its proper divisors (14414596).

28829186 is a wasteful number, since it uses less digits than its factorization.

28829186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14414595.

The product of its digits is 110592, while the sum is 44.

The square root of 28829186 is about 5369.2817024254. The cubic root of 28829186 is about 306.6272820142.

The spelling of 28829186 in words is "twenty-eight million, eight hundred twenty-nine thousand, one hundred eighty-six".