28129246 has 8 divisors (see below), whose sum is σ = 43648920. Its totient is φ = 13579608.

The previous prime is 28129243. The next prime is 28129249. The reversal of 28129246 is 64292182.

It is an interprime number because it is at equal distance from previous prime (28129243) and next prime (28129249).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28129243) by changing a digit.

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, 242436 + ... + 242551.

It is an arithmetic number, because the mean of its divisors is an integer number (5456115).

Almost surely, 2^28129246 is an apocalyptic number.

28129246 is a deficient number, since it is larger than the sum of its proper divisors (15519674).

28129246 is a wasteful number, since it uses less digits than its factorization.

28129246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485018.

The product of its digits is 13824, while the sum is 34.

The square root of 28129246 is about 5303.7011605105. The cubic root of 28129246 is about 304.1254027299.

The spelling of 28129246 in words is "twenty-eight million, one hundred twenty-nine thousand, two hundred forty-six".