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71384386 = 243830051
BaseRepresentation
bin1000100000100…
…11110101000010
311222022200222011
410100103311002
5121233300021
611030003134
71524520513
oct420236502
9158280864
1071384386
1137327167
121baa64aa
1311a349a8
1496a2a0a
156400de1
hex4413d42

71384386 has 8 divisors (see below), whose sum is σ = 109566864. Its totient is φ = 34862100.

The previous prime is 71384371. The next prime is 71384393. The reversal of 71384386 is 68348317.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414940 + ... + 415111.

It is an arithmetic number, because the mean of its divisors is an integer number (13695858).

Almost surely, 271384386 is an apocalyptic number.

71384386 is a deficient number, since it is larger than the sum of its proper divisors (38182478).

71384386 is a wasteful number, since it uses less digits than its factorization.

71384386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830096.

The product of its digits is 96768, while the sum is 40.

The square root of 71384386 is about 8448.9280976938. The cubic root of 71384386 is about 414.8276944734.

The spelling of 71384386 in words is "seventy-one million, three hundred eighty-four thousand, three hundred eighty-six".

Divisors: 1 2 43 86 830051 1660102 35692193 71384386