Search a number
-
+
28657235 = 510156747
BaseRepresentation
bin110110101010…
…0011001010011
31222220221100002
41231110121103
524314012420
62502120215
7465403535
oct155243123
958827302
1028657235
11151a3672
12972006b
135c24a59
143b3d855
1527b1075
hex1b54653

28657235 has 8 divisors (see below), whose sum is σ = 34729776. Its totient is φ = 22698400.

The previous prime is 28657201. The next prime is 28657243. The reversal of 28657235 is 53275682.

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

It is not a de Polignac number, because 28657235 - 222 = 24462931 is a prime.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 27869 + ... + 28878.

It is an arithmetic number, because the mean of its divisors is an integer number (4341222).

Almost surely, 228657235 is an apocalyptic number.

28657235 is a deficient number, since it is larger than the sum of its proper divisors (6072541).

28657235 is a wasteful number, since it uses less digits than its factorization.

28657235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56853.

The product of its digits is 100800, while the sum is 38.

The square root of 28657235 is about 5353.2452773995. The cubic root of 28657235 is about 306.0164422224.

The spelling of 28657235 in words is "twenty-eight million, six hundred fifty-seven thousand, two hundred thirty-five".

Divisors: 1 5 101 505 56747 283735 5731447 28657235