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28830419 = 173674621
BaseRepresentation
bin110110111111…
…0101011010011
32000020201220022
41231332223103
524340033134
62505534055
7500024462
oct155765323
960221808
1028830419
11153017a2
1297a432b
135c85827
143b869d9
1527e752e
hex1b7ead3

28830419 has 8 divisors (see below), whose sum is σ = 30616128. Its totient is φ = 27054720.

The previous prime is 28830383. The next prime is 28830427. The reversal of 28830419 is 91403882.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28830419 is a prime.

It is a super-3 number, since 3×288304193 (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28830449) 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 7 ways as a sum of consecutive naturals, for example, 3929 + ... + 8549.

It is an arithmetic number, because the mean of its divisors is an integer number (3827016).

Almost surely, 228830419 is an apocalyptic number.

28830419 is a deficient number, since it is larger than the sum of its proper divisors (1785709).

28830419 is a wasteful number, since it uses less digits than its factorization.

28830419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28830419 is about 5369.3965210254. The cubic root of 28830419 is about 306.6316533487.

The spelling of 28830419 in words is "twenty-eight million, eight hundred thirty thousand, four hundred nineteen".

Divisors: 1 17 367 4621 6239 78557 1695907 28830419