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71430760 = 2351785769
BaseRepresentation
bin1000100000111…
…11001001101000
311222102001120201
410100133021220
5121241241020
611031001544
71525102642
oct420371150
9158361521
1071430760
1137358a95
121bb092b4
1311a4cb2b
1496b5892
15640ea0a
hex441f268

71430760 has 16 divisors (see below), whose sum is σ = 160719300. Its totient is φ = 28572288.

The previous prime is 71430673. The next prime is 71430781. The reversal of 71430760 is 6703417.

It can be written as a sum of positive squares in 2 ways, for example, as 64866916 + 6563844 = 8054^2 + 2562^2 .

It is an unprimeable number.

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, 892845 + ... + 892924.

Almost surely, 271430760 is an apocalyptic number.

It is an amenable number.

71430760 is an abundant number, since it is smaller than the sum of its proper divisors (89288540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71430760 is a wasteful number, since it uses less digits than its factorization.

71430760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785780 (or 1785776 counting only the distinct ones).

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

The square root of 71430760 is about 8451.6720239252. The cubic root of 71430760 is about 414.9175042873.

The spelling of 71430760 in words is "seventy-one million, four hundred thirty thousand, seven hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 1785769 3571538 7143076 8928845 14286152 17857690 35715380 71430760