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28357674 = 234726279
BaseRepresentation
bin110110000101…
…1010000101010
31222100201102020
41230023100222
524224421144
62451445310
7463015302
oct154132052
958321366
1028357674
11150095a4
1295b6836
135b4b5b7
143aa2602
152752419
hex1b0b42a

28357674 has 8 divisors (see below), whose sum is σ = 56715360. Its totient is φ = 9452556.

The previous prime is 28357673. The next prime is 28357687. The reversal of 28357674 is 47675382.

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

28357674 is an admirable number.

It is a super-3 number, since 3×283576743 (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28357673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2363134 + ... + 2363145.

It is an arithmetic number, because the mean of its divisors is an integer number (7089420).

Almost surely, 228357674 is an apocalyptic number.

28357674 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28357674 is a wasteful number, since it uses less digits than its factorization.

28357674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726284.

The product of its digits is 282240, while the sum is 42.

The square root of 28357674 is about 5325.1923908907. The cubic root of 28357674 is about 304.9464171749.

It can be divided in two parts, 2835767 and 4, that added together give a triangular number (2835771 = T2381).

The spelling of 28357674 in words is "twenty-eight million, three hundred fifty-seven thousand, six hundred seventy-four".

Divisors: 1 2 3 6 4726279 9452558 14178837 28357674