Search a number
-
+
83126281 = 720835701
BaseRepresentation
bin1001111010001…
…10100000001001
312210102020211011
410331012200021
5132240020111
612125403521
72026363450
oct475064011
9183366734
1083126281
1142a17007
1223a095a1
13142b6364
14b07bb97
157470021
hex4f46809

83126281 has 8 divisors (see below), whose sum is σ = 95063744. Its totient is φ = 71204400.

The previous prime is 83126261. The next prime is 83126287. The reversal of 83126281 is 18262138.

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

It is a cyclic number.

It is not a de Polignac number, because 83126281 - 29 = 83125769 is a prime.

It is a super-2 number, since 2×831262812 = 13819957185781922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83126287) 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 7 ways as a sum of consecutive naturals, for example, 11731 + ... + 17431.

It is an arithmetic number, because the mean of its divisors is an integer number (11882968).

Almost surely, 283126281 is an apocalyptic number.

It is an amenable number.

83126281 is a deficient number, since it is larger than the sum of its proper divisors (11937463).

83126281 is a wasteful number, since it uses less digits than its factorization.

83126281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7791.

The product of its digits is 4608, while the sum is 31.

The square root of 83126281 is about 9117.3615152631. The cubic root of 83126281 is about 436.4281785989.

The spelling of 83126281 in words is "eighty-three million, one hundred twenty-six thousand, two hundred eighty-one".

Divisors: 1 7 2083 5701 14581 39907 11875183 83126281