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83185384 = 23139239313
BaseRepresentation
bin1001111010101…
…00111011101000
312210112020220011
410331110323220
5132243413014
612130541304
72030030662
oct475247350
9183466804
1083185384
1142a57457
1223a37834
1314307229
14b095532
1574827c4
hex4f54ee8

83185384 has 32 divisors (see below), whose sum is σ = 158256000. Its totient is φ = 40989312.

The previous prime is 83185367. The next prime is 83185387. The reversal of 83185384 is 48358138.

It is a super-2 number, since 2×831853842 = 13839616222454912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (83185387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265612 + ... + 265924.

It is an arithmetic number, because the mean of its divisors is an integer number (4945500).

Almost surely, 283185384 is an apocalyptic number.

It is an amenable number.

83185384 is a deficient number, since it is larger than the sum of its proper divisors (75070616).

83185384 is a wasteful number, since it uses less digits than its factorization.

83185384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 693 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 83185384 is about 9120.6021731024. The cubic root of 83185384 is about 436.5315879479.

The spelling of 83185384 in words is "eighty-three million, one hundred eighty-five thousand, three hundred eighty-four".

Divisors: 1 2 4 8 139 239 278 313 478 556 626 956 1112 1252 1912 2504 33221 43507 66442 74807 87014 132884 149614 174028 265768 299228 348056 598456 10398173 20796346 41592692 83185384