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69283381 = 174075493
BaseRepresentation
bin1000010000100…
…10111000110101
311211100221221011
410020102320311
5120214032011
610512552221
71500620236
oct410227065
9154327834
1069283381
11361216a2
121b252671
131147a5ab
1492b708d
156138621
hex4212e35

69283381 has 4 divisors (see below), whose sum is σ = 73358892. Its totient is φ = 65207872.

The previous prime is 69283339. The next prime is 69283387. The reversal of 69283381 is 18338296.

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 37822500 + 31460881 = 6150^2 + 5609^2 .

It is a cyclic number.

It is not a de Polignac number, because 69283381 - 217 = 69152309 is a prime.

It is a super-2 number, since 2×692833812 = 9600373765582322, 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. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69283387) 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 3 ways as a sum of consecutive naturals, for example, 2037730 + ... + 2037763.

It is an arithmetic number, because the mean of its divisors is an integer number (18339723).

Almost surely, 269283381 is an apocalyptic number.

It is an amenable number.

69283381 is a deficient number, since it is larger than the sum of its proper divisors (4075511).

69283381 is a wasteful number, since it uses less digits than its factorization.

69283381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075510.

The product of its digits is 62208, while the sum is 40.

The square root of 69283381 is about 8323.6639168097. The cubic root of 69283381 is about 410.7173264436.

The spelling of 69283381 in words is "sixty-nine million, two hundred eighty-three thousand, three hundred eighty-one".

Divisors: 1 17 4075493 69283381