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71674031 = 1113501217
BaseRepresentation
bin1000100010110…
…10100010101111
311222212102021202
410101122202233
5121322032111
611040120115
71530135122
oct421324257
9158772252
1071674031
1137504840
122000603b
1311b06790
14973a3b9
15645bb3b
hex445a8af

71674031 has 8 divisors (see below), whose sum is σ = 84204624. Its totient is φ = 60145920.

The previous prime is 71674021. The next prime is 71674033. The reversal of 71674031 is 13047617.

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 71674031 - 226 = 4565167 is a prime.

It is a super-2 number, since 2×716740312 = 10274333439577922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71673985 and 71674003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71674033) 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 7 ways as a sum of consecutive naturals, for example, 250466 + ... + 250751.

It is an arithmetic number, because the mean of its divisors is an integer number (10525578).

Almost surely, 271674031 is an apocalyptic number.

71674031 is a deficient number, since it is larger than the sum of its proper divisors (12530593).

71674031 is a wasteful number, since it uses less digits than its factorization.

71674031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501241.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 71674031 is about 8466.0516771397. The cubic root of 71674031 is about 415.3879973231.

It can be divided in two parts, 716 and 74031, that added together give a palindrome (74747).

The spelling of 71674031 in words is "seventy-one million, six hundred seventy-four thousand, thirty-one".

Divisors: 1 11 13 143 501217 5513387 6515821 71674031