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71707933 = 118378541
BaseRepresentation
bin1000100011000…
…10110100011101
311222221010210101
410101202310131
5121324123213
611040541101
71530336013
oct421426435
9158833711
1071707933
1137528260
1220021791
1311b1903b
1497488b3
156466bdd
hex4462d1d

71707933 has 8 divisors (see below), whose sum is σ = 79170336. Its totient is φ = 64402800.

The previous prime is 71707913. The next prime is 71707943. The reversal of 71707933 is 33970717.

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

It is not a de Polignac number, because 71707933 - 25 = 71707901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71707892 and 71707901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71707903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38358 + ... + 40183.

It is an arithmetic number, because the mean of its divisors is an integer number (9896292).

Almost surely, 271707933 is an apocalyptic number.

It is an amenable number.

71707933 is a deficient number, since it is larger than the sum of its proper divisors (7462403).

71707933 is a wasteful number, since it uses less digits than its factorization.

71707933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78635.

The product of its (nonzero) digits is 27783, while the sum is 37.

The square root of 71707933 is about 8468.0536724799. The cubic root of 71707933 is about 415.4534801947.

The spelling of 71707933 in words is "seventy-one million, seven hundred seven thousand, nine hundred thirty-three".

Divisors: 1 11 83 913 78541 863951 6518903 71707933