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3180709540 = 225978811861
BaseRepresentation
bin1011110110010101…
…1100011010100100
322012200001210020001
42331211130122210
523003230201130
61243341351044
7141551404441
oct27545343244
98180053201
103180709540
111392478178
12749268484
133b8c76368
142226069c8
1513938c6ca
hexbd95c6a4

3180709540 has 48 divisors (see below), whose sum is σ = 6759640944. Its totient is φ = 1257062400.

The previous prime is 3180709517. The next prime is 3180709541. The reversal of 3180709540 is 459070813.

It can be written as a sum of positive squares in 8 ways, for example, as 1163082816 + 2017626724 = 34104^2 + 44918^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3180709540.

It is not an unprimeable number, because it can be changed into a prime (3180709541) 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 15 ways as a sum of consecutive naturals, for example, 1708210 + ... + 1710070.

It is an arithmetic number, because the mean of its divisors is an integer number (140825853).

Almost surely, 23180709540 is an apocalyptic number.

It is an amenable number.

3180709540 is an abundant number, since it is smaller than the sum of its proper divisors (3578931404).

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

3180709540 is a wasteful number, since it uses less digits than its factorization.

3180709540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848 (or 2846 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 3180709540 is about 56397.7795662205. The cubic root of 3180709540 is about 1470.6455183967.

The spelling of 3180709540 in words is "three billion, one hundred eighty million, seven hundred nine thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 97 194 388 485 881 970 1762 1861 1940 3524 3722 4405 7444 8810 9305 17620 18610 37220 85457 170914 180517 341828 361034 427285 722068 854570 902585 1639541 1709140 1805170 3279082 3610340 6558164 8197705 16395410 32790820 159035477 318070954 636141908 795177385 1590354770 3180709540