28730841 has 8 divisors (see below), whose sum is σ = 39973440. Its totient is φ = 18321072.

The previous prime is 28730813. The next prime is 28730861. The reversal of 28730841 is 14803782.

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

It is not a de Polignac number, because 28730841 - 2⁵ = 28730809 is a prime.

It is a super-2 number, since 2×28730841² = 1650922449134562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28730861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208126 + ... + 208263.

It is an arithmetic number, because the mean of its divisors is an integer number (4996680).

Almost surely, 2^28730841 is an apocalyptic number.

It is an amenable number.

28730841 is a deficient number, since it is larger than the sum of its proper divisors (11242599).

28730841 is a wasteful number, since it uses less digits than its factorization.

28730841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416415.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28730841 is about 5360.1157636753. The cubic root of 28730841 is about 306.2782189185.

The spelling of 28730841 in words is "twenty-eight million, seven hundred thirty thousand, eight hundred forty-one".