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71230276 = 22131369813
BaseRepresentation
bin1000011111011…
…10001101000100
311222000212120101
410033232031010
5121213332101
611022413444
71523306305
oct417561504
9158025511
1071230276
11372313a7
121ba31284
13119ac7c0
1496627ac
1563c0401
hex43ee344

71230276 has 12 divisors (see below), whose sum is σ = 134241772. Its totient is φ = 32875488.

The previous prime is 71230199. The next prime is 71230277. The reversal of 71230276 is 67203217.

It can be written as a sum of positive squares in 2 ways, for example, as 27352900 + 43877376 = 5230^2 + 6624^2 .

It is not an unprimeable number, because it can be changed into a prime (71230277) 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, 684855 + ... + 684958.

Almost surely, 271230276 is an apocalyptic number.

It is an amenable number.

71230276 is a deficient number, since it is larger than the sum of its proper divisors (63011496).

71230276 is a wasteful number, since it uses less digits than its factorization.

71230276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369830 (or 1369828 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 71230276 is about 8439.8030782714. The cubic root of 71230276 is about 414.5289589477.

The spelling of 71230276 in words is "seventy-one million, two hundred thirty thousand, two hundred seventy-six".

Divisors: 1 2 4 13 26 52 1369813 2739626 5479252 17807569 35615138 71230276