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7996032121 = 73114767673
BaseRepresentation
bin1110111001001100…
…11100010001111001
3202122020221111222211
413130212130101321
5112333441011441
63401234415121
7402102103000
oct73446342171
922566844884
107996032121
113433608310
121671a314a1
139a578406c
1455bd53c37
1531beb4a81
hex1dc99c479

7996032121 has 64 divisors (see below), whose sum is σ = 10559692800. Its totient is φ = 5998164480.

The previous prime is 7996032101. The next prime is 7996032139. The reversal of 7996032121 is 1212306997.

It is not a de Polignac number, because 7996032121 - 231 = 5848548473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7996032101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11880841 + ... + 11881513.

It is an arithmetic number, because the mean of its divisors is an integer number (164995200).

Almost surely, 27996032121 is an apocalyptic number.

It is an amenable number.

7996032121 is a deficient number, since it is larger than the sum of its proper divisors (2563660679).

7996032121 is a wasteful number, since it uses less digits than its factorization.

7996032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 7996032121 is about 89420.5352310083. The cubic root of 7996032121 is about 1999.6692887347.

The spelling of 7996032121 in words is "seven billion, nine hundred ninety-six million, thirty-two thousand, one hundred twenty-one".

Divisors: 1 7 11 47 49 67 77 329 343 469 517 539 673 737 2303 3149 3283 3619 3773 4711 5159 7403 16121 22043 22981 25333 31631 32977 34639 36113 45091 51821 154301 177331 221417 230839 242473 252791 315637 347941 362747 496001 1080107 1549919 1697311 2119277 2209459 2435587 2539229 3472007 10849433 11881177 14834939 15466213 17049109 23312047 24304049 103844573 119343763 163184329 170128343 726912011 1142290303 7996032121