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71868364 = 2271924989
BaseRepresentation
bin1000100100010…
…01111111001100
312000020021212021
410102021333030
5121344241424
611044215524
71531604521
oct422117714
9160207767
1071868364
1137627847
122009a5a4
1311b74079
14978b148
1564994e4
hex4489fcc

71868364 has 12 divisors (see below), whose sum is σ = 125949600. Its totient is φ = 35882768.

The previous prime is 71868361. The next prime is 71868373. The reversal of 71868364 is 46386817.

It is a self number, because there is not a number n which added to its sum of digits gives 71868364.

It is not an unprimeable number, because it can be changed into a prime (71868361) 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 3 ways as a sum of consecutive naturals, for example, 9619 + ... + 15370.

It is an arithmetic number, because the mean of its divisors is an integer number (10495800).

Almost surely, 271868364 is an apocalyptic number.

It is an amenable number.

71868364 is a deficient number, since it is larger than the sum of its proper divisors (54081236).

71868364 is a wasteful number, since it uses less digits than its factorization.

71868364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25712 (or 25710 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 71868364 is about 8477.5210999443. The cubic root of 71868364 is about 415.7630785427.

The spelling of 71868364 in words is "seventy-one million, eight hundred sixty-eight thousand, three hundred sixty-four".

Divisors: 1 2 4 719 1438 2876 24989 49978 99956 17967091 35934182 71868364