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28854833 = 74122119
BaseRepresentation
bin110111000010…
…0101000110001
32000021222101112
41232010220301
524341323313
62510243105
7500155610
oct156045061
960258345
1028854833
1115319077
1297b6495
135c93987
143b91877
1527ee8a8
hex1b84a31

28854833 has 4 divisors (see below), whose sum is σ = 32976960. Its totient is φ = 24732708.

The previous prime is 28854827. The next prime is 28854841. The reversal of 28854833 is 33845882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28854833 - 28 = 28854577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28854233) 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, 2061053 + ... + 2061066.

It is an arithmetic number, because the mean of its divisors is an integer number (8244240).

Almost surely, 228854833 is an apocalyptic number.

It is an amenable number.

28854833 is a deficient number, since it is larger than the sum of its proper divisors (4122127).

28854833 is an equidigital number, since it uses as much as digits as its factorization.

28854833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122126.

The product of its digits is 184320, while the sum is 41.

The square root of 28854833 is about 5371.6694797800. The cubic root of 28854833 is about 306.7181822457.

The spelling of 28854833 in words is "twenty-eight million, eight hundred fifty-four thousand, eight hundred thirty-three".

Divisors: 1 7 4122119 28854833