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71980034 = 275141431
BaseRepresentation
bin1000100101001…
…01010000000010
312000102222001012
410102211100002
5121411330114
611050440522
71532551220
oct422452002
9160388035
1071980034
11376a3735
1220133142
1311bb2b49
1497b9b10
1564bc63e
hex44a5402

71980034 has 8 divisors (see below), whose sum is σ = 123394368. Its totient is φ = 30848580.

The previous prime is 71980031. The next prime is 71980067. The reversal of 71980034 is 43008917.

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

It is a super-2 number, since 2×719800342 = 10362250589282312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71980031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2570702 + ... + 2570729.

It is an arithmetic number, because the mean of its divisors is an integer number (15424296).

Almost surely, 271980034 is an apocalyptic number.

71980034 is a deficient number, since it is larger than the sum of its proper divisors (51414334).

71980034 is a wasteful number, since it uses less digits than its factorization.

71980034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5141440.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 71980034 is about 8484.1047848315. The cubic root of 71980034 is about 415.9783064686.

The spelling of 71980034 in words is "seventy-one million, nine hundred eighty thousand, thirty-four".

Divisors: 1 2 7 14 5141431 10282862 35990017 71980034