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7641408008 = 2313216193491
BaseRepresentation
bin1110001110111011…
…01010001000001000
3201201112122202011102
413013131222020020
5111122200024013
63302125520532
7360234616313
oct70735521010
921645582142
107641408008
113271414a33
121593113148
1394a16c200
14526c0197a
152eacb5d58
hex1c776a208

7641408008 has 48 divisors (see below), whose sum is σ = 15528574800. Its totient is φ = 3523615680.

The previous prime is 7641407999. The next prime is 7641408133. The reversal of 7641408008 is 8008041467.

It is a super-2 number, since 2×76414080082 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2187143 + ... + 2190633.

It is an arithmetic number, because the mean of its divisors is an integer number (323511975).

Almost surely, 27641408008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7641408008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7764287400).

7641408008 is an abundant number, since it is smaller than the sum of its proper divisors (7887166792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7641408008 is a wasteful number, since it uses less digits than its factorization.

7641408008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142 (or 5125 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 7641408008 is about 87415.1474745653. The cubic root of 7641408008 is about 1969.6593850541.

The spelling of 7641408008 in words is "seven billion, six hundred forty-one million, four hundred eight thousand, eight".

Divisors: 1 2 4 8 13 26 52 104 169 338 676 1352 1619 3238 3491 6476 6982 12952 13964 21047 27928 42094 45383 84188 90766 168376 181532 273611 363064 547222 589979 1094444 1179958 2188888 2359916 4719832 5651929 11303858 22607716 45215432 73475077 146950154 293900308 587800616 955176001 1910352002 3820704004 7641408008