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71868353 = 2321031319
BaseRepresentation
bin1000100100010…
…01111111000001
312000020021211212
410102021333001
5121344241403
611044215505
71531604504
oct422117701
9160207755
1071868353
1137627837
122009a595
1311b7406b
14978b13b
1564994d8
hex4489fc1

71868353 has 12 divisors (see below), whose sum is σ = 75915840. Its totient is φ = 68024616.

The previous prime is 71868347. The next prime is 71868359. The reversal of 71868353 is 35386817.

It is an interprime number because it is at equal distance from previous prime (71868347) and next prime (71868359).

It is not a de Polignac number, because 71868353 - 24 = 71868337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71868353.

It is not an unprimeable number, because it can be changed into a prime (71868359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53828 + ... + 55146.

It is an arithmetic number, because the mean of its divisors is an integer number (6326320).

Almost surely, 271868353 is an apocalyptic number.

It is an amenable number.

71868353 is a deficient number, since it is larger than the sum of its proper divisors (4047487).

71868353 is a wasteful number, since it uses less digits than its factorization.

71868353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1445 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 71868353 is about 8477.5204511697. The cubic root of 71868353 is about 415.7630573308.

The spelling of 71868353 in words is "seventy-one million, eight hundred sixty-eight thousand, three hundred fifty-three".

Divisors: 1 23 103 529 1319 2369 30337 54487 135857 697751 3124711 71868353