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7129041982 = 243711167547
BaseRepresentation
bin1101010001110110…
…01000110000111110
3200101211112212002221
412220323020300332
5104100013320412
63135224035554
7341443566646
oct65073106076
920354485087
107129041982
113029181837
12146b602bba
13897c7764a
144b8b4b526
152bad08b07
hex1a8ec8c3e

7129041982 has 16 divisors (see below), whose sum is σ = 11096376192. Its totient is φ = 3432585240.

The previous prime is 7129041979. The next prime is 7129042009. The reversal of 7129041982 is 2891409217.

It is a happy number.

It is a super-3 number, since 3×71290419823 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577668 + ... + 589879.

It is an arithmetic number, because the mean of its divisors is an integer number (693523512).

Almost surely, 27129041982 is an apocalyptic number.

7129041982 is a deficient number, since it is larger than the sum of its proper divisors (3967334210).

7129041982 is a wasteful number, since it uses less digits than its factorization.

7129041982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167663.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 7129041982 is about 84433.6543210111. The cubic root of 7129041982 is about 1924.6143698885.

The spelling of 7129041982 in words is "seven billion, one hundred twenty-nine million, forty-one thousand, nine hundred eighty-two".

Divisors: 1 2 43 71 86 142 3053 6106 1167547 2335094 50204521 82895837 100409042 165791674 3564520991 7129041982