28147130 has 32 divisors (see below), whose sum is σ = 56220480. Its totient is φ = 10059520.

The previous prime is 28147127. The next prime is 28147183. The reversal of 28147130 is 3174182.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28147130.

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 15 ways as a sum of consecutive naturals, for example, 4322 + ... + 8658.

It is an arithmetic number, because the mean of its divisors is an integer number (1756890).

Almost surely, 2^28147130 is an apocalyptic number.

28147130 is a deficient number, since it is larger than the sum of its proper divisors (28073350).

28147130 is a wasteful number, since it uses less digits than its factorization.

28147130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4414.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 28147130 is about 5305.3868850443. The cubic root of 28147130 is about 304.1898413151.

The spelling of 28147130 in words is "twenty-eight million, one hundred forty-seven thousand, one hundred thirty".