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7668100212 = 223639008351
BaseRepresentation
bin1110010010000110…
…11110110001110100
3201210101212211222120
413021003132301310
5111201013201322
63304521555540
7361010530203
oct71103366164
921711784876
107668100212
113285496203
1215a0045bb0
13952856706
1452a58d23a
152ed2d9a5c
hex1c90dec74

7668100212 has 12 divisors (see below), whose sum is σ = 17892233856. Its totient is φ = 2556033400.

The previous prime is 7668100211. The next prime is 7668100273. The reversal of 7668100212 is 2120018667.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×76681002122 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7668100211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 319504164 + ... + 319504187.

It is an arithmetic number, because the mean of its divisors is an integer number (1491019488).

Almost surely, 27668100212 is an apocalyptic number.

It is an amenable number.

7668100212 is an abundant number, since it is smaller than the sum of its proper divisors (10224133644).

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

7668100212 is a wasteful number, since it uses less digits than its factorization.

7668100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639008358 (or 639008356 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 7668100212 is about 87567.6893151806. The cubic root of 7668100212 is about 1971.9501257363.

Adding to 7668100212 its reverse (2120018667), we get a palindrome (9788118879).

It can be divided in two parts, 7668 and 100212, that added together give a triangular number (107880 = T464).

The spelling of 7668100212 in words is "seven billion, six hundred sixty-eight million, one hundred thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 639008351 1278016702 1917025053 2556033404 3834050106 7668100212