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272701081 = 1591317137
BaseRepresentation
bin10000010000010…
…001011010011001
3201000010122120001
4100100101122121
51024302413311
643020533001
76520630612
oct2020213231
9630118501
10272701081
1112aa293a4
12773b1161
13446603b3
1428308c09
1518e1a4c1
hex10411699

272701081 has 4 divisors (see below), whose sum is σ = 272734132. Its totient is φ = 272668032.

The previous prime is 272701057. The next prime is 272701109. The reversal of 272701081 is 180107272.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 86787856 + 185913225 = 9316^2 + 13635^2 .

It is a cyclic number.

It is not a de Polignac number, because 272701081 - 227 = 138483353 is a prime.

It is a super-2 number, since 2×2727010812 = 148731759157137122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272701031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7345 + ... + 24481.

It is an arithmetic number, because the mean of its divisors is an integer number (68183533).

Almost surely, 2272701081 is an apocalyptic number.

It is an amenable number.

272701081 is a deficient number, since it is larger than the sum of its proper divisors (33051).

272701081 is a wasteful number, since it uses less digits than its factorization.

272701081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33050.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 272701081 is about 16513.6634639319. The cubic root of 272701081 is about 648.4785567512.

The spelling of 272701081 in words is "two hundred seventy-two million, seven hundred one thousand, eighty-one".

Divisors: 1 15913 17137 272701081