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269008081 = 594559459
BaseRepresentation
bin10000000010001…
…011110011010001
3200202012000201021
4100002023303101
51022331224311
642405435441
76444350056
oct2002136321
9622160637
10269008081
11128936831
127610bb81
13439694a4
1427a2702d
151893b171
hex1008bcd1

269008081 has 4 divisors (see below), whose sum is σ = 273567600. Its totient is φ = 264448564.

The previous prime is 269008079. The next prime is 269008097. The reversal of 269008081 is 180800962.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 269008081 - 21 = 269008079 is a prime.

It is a super-2 number, since 2×2690080812 = 144730695286605122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (269008021) 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, 2279671 + ... + 2279788.

It is an arithmetic number, because the mean of its divisors is an integer number (68391900).

Almost surely, 2269008081 is an apocalyptic number.

It is an amenable number.

269008081 is a deficient number, since it is larger than the sum of its proper divisors (4559519).

269008081 is an equidigital number, since it uses as much as digits as its factorization.

269008081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4559518.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 269008081 is about 16401.4658186395. The cubic root of 269008081 is about 645.5379451430.

The spelling of 269008081 in words is "two hundred sixty-nine million, eight thousand, eighty-one".

Divisors: 1 59 4559459 269008081