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82992169 = 136384013
BaseRepresentation
bin1001111001001…
…01110000101001
312210011102212001
410330211300221
5132221222134
612122451001
72025264451
oct474456051
9183142761
1082992169
1142935277
1223963a61
131426a2c0
14b044d61
157445414
hex4f25c29

82992169 has 4 divisors (see below), whose sum is σ = 89376196. Its totient is φ = 76608144.

The previous prime is 82992157. The next prime is 82992179. The reversal of 82992169 is 96129928.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33500944 + 49491225 = 5788^2 + 7035^2 .

It is a cyclic number.

It is not a de Polignac number, because 82992169 - 25 = 82992137 is a prime.

It is a super-2 number, since 2×829921692 = 13775400230649122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82992179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3191994 + ... + 3192019.

It is an arithmetic number, because the mean of its divisors is an integer number (22344049).

Almost surely, 282992169 is an apocalyptic number.

It is an amenable number.

82992169 is a deficient number, since it is larger than the sum of its proper divisors (6384027).

82992169 is a wasteful number, since it uses less digits than its factorization.

82992169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6384026.

The product of its digits is 139968, while the sum is 46.

The square root of 82992169 is about 9110.0037870464. The cubic root of 82992169 is about 436.1933480893.

The spelling of 82992169 in words is "eighty-two million, nine hundred ninety-two thousand, one hundred sixty-nine".

Divisors: 1 13 6384013 82992169