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3297232981 = 72292320361
BaseRepresentation
bin1100010010000111…
…1100100001010101
322111210022210100001
43010201330201111
523223042423411
61303103051301
7144465006100
oct30441744125
98453283301
103297232981
111442224a39
127802a0b31
13407153a43
14233c99737
15144707dc1
hexc487c855

3297232981 has 12 divisors (see below), whose sum is σ = 3967819020. Its totient is φ = 2728743360.

The previous prime is 3297232973. The next prime is 3297232993. The reversal of 3297232981 is 1892327923.

It can be written as a sum of positive squares in 2 ways, for example, as 1914062500 + 1383170481 = 43750^2 + 37191^2 .

It is not a de Polignac number, because 3297232981 - 23 = 3297232973 is a prime.

It is a super-2 number, since 2×32972329812 = 21743490661988292722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3297232901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1158760 + ... + 1161601.

It is an arithmetic number, because the mean of its divisors is an integer number (330651585).

Almost surely, 23297232981 is an apocalyptic number.

It is an amenable number.

3297232981 is a deficient number, since it is larger than the sum of its proper divisors (670586039).

3297232981 is a wasteful number, since it uses less digits than its factorization.

3297232981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320404 (or 2320397 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 3297232981 is about 57421.5376056755. The cubic root of 3297232981 is about 1488.3893201062.

The spelling of 3297232981 in words is "three billion, two hundred ninety-seven million, two hundred thirty-two thousand, nine hundred eighty-one".

Divisors: 1 7 29 49 203 1421 2320361 16242527 67290469 113697689 471033283 3297232981