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273720481 = 61273561
BaseRepresentation
bin10000010100001…
…010010010100001
3201002001102220121
4100110022102201
51030033023411
643054440241
76532404616
oct2024122241
9632042817
10273720481
11130565281
1277803081
13449293a8
14284d250d
151906c571
hex1050a4a1

273720481 has 6 divisors (see below), whose sum is σ = 278285046. Its totient is φ = 269229600.

The previous prime is 273720463. The next prime is 273720497. The reversal of 273720481 is 184027372.

It can be written as a sum of positive squares in 3 ways, for example, as 51710481 + 222010000 = 7191^2 + 14900^2 .

It is not a de Polignac number, because 273720481 - 27 = 273720353 is a prime.

It is a super-2 number, since 2×2737204812 = 149845803437742722, which contains 22 as substring.

It is the 16545-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (273720431) by changing a digit.

It is a nontrivial repunit in base 16544.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33060 + ... + 40501.

It is an arithmetic number, because the mean of its divisors is an integer number (46380841).

Almost surely, 2273720481 is an apocalyptic number.

It is an amenable number.

273720481 is a deficient number, since it is larger than the sum of its proper divisors (4564565).

273720481 is an frugal number, since it uses more digits than its factorization.

273720481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73683 (or 73622 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 273720481 is about 16544.5000226661. The cubic root of 273720481 is about 649.2855906289.

The spelling of 273720481 in words is "two hundred seventy-three million, seven hundred twenty thousand, four hundred eighty-one".

Divisors: 1 61 3721 73561 4487221 273720481