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1297030956 = 2231318114591
BaseRepresentation
bin100110101001111…
…0001111100101100
310100101120222222120
41031103301330230
510124014442311
6332411512540
744066403234
oct11523617454
93311528876
101297030956
1160615a611
12302458750
13178938750
14c438acc4
1578d05706
hex4d4f1f2c

1297030956 has 48 divisors (see below), whose sum is σ = 3261715968. Its totient is φ = 398779200.

The previous prime is 1297030949. The next prime is 1297030961. The reversal of 1297030956 is 6590307921.

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 15 ways as a sum of consecutive naturals, for example, 280221 + ... + 284811.

It is an arithmetic number, because the mean of its divisors is an integer number (67952416).

Almost surely, 21297030956 is an apocalyptic number.

It is an amenable number.

1297030956 is an abundant number, since it is smaller than the sum of its proper divisors (1964685012).

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

1297030956 is a wasteful number, since it uses less digits than its factorization.

1297030956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6422 (or 6420 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 1297030956 is about 36014.3159868406. The cubic root of 1297030956 is about 1090.5613795955.

The spelling of 1297030956 in words is "one billion, two hundred ninety-seven million, thirty thousand, nine hundred fifty-six".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 1811 3622 4591 5433 7244 9182 10866 13773 18364 21732 23543 27546 47086 55092 59683 70629 94172 119366 141258 179049 238732 282516 358098 716196 8314301 16628602 24942903 33257204 49885806 99771612 108085913 216171826 324257739 432343652 648515478 1297030956