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1297330580 = 225713712819
BaseRepresentation
bin100110101010011…
…1011000110010100
310100102011012222202
41031110323012110
510124104034310
6332422144032
744102061620
oct11524730624
93312135882
101297330580
11606344737
12302582018
13178a11c40
14c4428180
1578d643a5
hex4d53b194

1297330580 has 48 divisors (see below), whose sum is σ = 3353105280. Its totient is φ = 410583168.

The previous prime is 1297330579. The next prime is 1297330589. The reversal of 1297330580 is 850337921.

It is a super-3 number, since 3×12973305803 (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297330589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354590 + ... + 358229.

It is an arithmetic number, because the mean of its divisors is an integer number (69856360).

Almost surely, 21297330580 is an apocalyptic number.

1297330580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1297330580 is an abundant number, since it is smaller than the sum of its proper divisors (2055774700).

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

1297330580 is a wasteful number, since it uses less digits than its factorization.

1297330580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712848 (or 712846 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1297330580 is about 36018.4755368686. The cubic root of 1297330580 is about 1090.6453491166.

The spelling of 1297330580 in words is "one billion, two hundred ninety-seven million, three hundred thirty thousand, five hundred eighty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 182 260 364 455 910 1820 712819 1425638 2851276 3564095 4989733 7128190 9266647 9979466 14256380 18533294 19958932 24948665 37066588 46333235 49897330 64866529 92666470 99794660 129733058 185332940 259466116 324332645 648665290 1297330580