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28790183254 = 272389410507
BaseRepresentation
bin11010110100000001…
…110101010101010110
32202022102210211210111
4122310001311111112
5432430241331004
621120453313234
72036306343220
oct326401652526
982272724714
1028790183254
1111234342888
1256b593581a
13293a8445c1
1415718c1410
15b377eea04
hex6b4075556

28790183254 has 16 divisors (see below), whose sum is σ = 51500452608. Its totient is φ = 11802186792.

The previous prime is 28790183249. The next prime is 28790183309. The reversal of 28790183254 is 45238109782.

It is a junction number, because it is equal to n+sod(n) for n = 28790183198 and 28790183207.

It is a congruent number.

It is an unprimeable number.

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, 44704932 + ... + 44705575.

It is an arithmetic number, because the mean of its divisors is an integer number (3218778288).

Almost surely, 228790183254 is an apocalyptic number.

28790183254 is a deficient number, since it is larger than the sum of its proper divisors (22710269354).

28790183254 is a wasteful number, since it uses less digits than its factorization.

28790183254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89410539.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 28790183254 in words is "twenty-eight billion, seven hundred ninety million, one hundred eighty-three thousand, two hundred fifty-four".

Divisors: 1 2 7 14 23 46 161 322 89410507 178821014 625873549 1251747098 2056441661 4112883322 14395091627 28790183254