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71414945 = 572040427
BaseRepresentation
bin1000100000110…
…11010010100001
311222101020212222
410100123102201
5121240234240
611030400425
71525005560
oct420332241
9158336788
1071414945
1137348118
121bb00115
1311a45884
1496adbd7
156409eb5
hex441b4a1

71414945 has 8 divisors (see below), whose sum is σ = 97940544. Its totient is φ = 48970224.

The previous prime is 71414911. The next prime is 71414969. The reversal of 71414945 is 54941417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71414945 - 220 = 70366369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 2040427 = 71414945 / (7 + 1 + 4 + 1 + 4 + 9 + 4 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020179 + ... + 1020248.

It is an arithmetic number, because the mean of its divisors is an integer number (12242568).

Almost surely, 271414945 is an apocalyptic number.

It is an amenable number.

71414945 is a deficient number, since it is larger than the sum of its proper divisors (26525599).

71414945 is a wasteful number, since it uses less digits than its factorization.

71414945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040439.

The product of its digits is 20160, while the sum is 35.

The square root of 71414945 is about 8450.7363584483. The cubic root of 71414945 is about 414.8868806705.

The spelling of 71414945 in words is "seventy-one million, four hundred fourteen thousand, nine hundred forty-five".

Divisors: 1 5 7 35 2040427 10202135 14282989 71414945