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71401711 = 314914691
BaseRepresentation
bin1000100000110…
…00000011101111
311222100120201211
410100120003233
5121234323321
611030215251
71524622153
oct420300357
9158316654
1071401711
1137339187
121bab4527
1311a3c844
1496a9063
1564060e1
hex44180ef

71401711 has 8 divisors (see below), whose sum is σ = 73870848. Its totient is φ = 68943000.

The previous prime is 71401703. The next prime is 71401723. The reversal of 71401711 is 11710417.

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 71401711 - 23 = 71401703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71401111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12876 + ... + 17566.

It is an arithmetic number, because the mean of its divisors is an integer number (9233856).

Almost surely, 271401711 is an apocalyptic number.

71401711 is a deficient number, since it is larger than the sum of its proper divisors (2469137).

71401711 is a wasteful number, since it uses less digits than its factorization.

71401711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213.

The product of its (nonzero) digits is 196, while the sum is 22.

The square root of 71401711 is about 8449.9533134805. The cubic root of 71401711 is about 414.8612513378.

The spelling of 71401711 in words is "seventy-one million, four hundred one thousand, seven hundred eleven".

Divisors: 1 31 491 4691 15221 145421 2303281 71401711