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1027311680 = 2653210349
BaseRepresentation
bin111101001110111…
…000100001000000
32122121001211200202
4331032320201000
54100442433210
6245534504332
734313001533
oct7516704100
92577054622
101027311680
1148798851a
122480650a8
13134ab0645
149a61aa1a
15602c89a5
hex3d3b8840

1027311680 has 28 divisors (see below), whose sum is σ = 2446286700. Its totient is φ = 410924544.

The previous prime is 1027311671. The next prime is 1027311707. The reversal of 1027311680 is 861137201.

It can be written as a sum of positive squares in 2 ways, for example, as 152571904 + 874739776 = 12352^2 + 29576^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604855 + ... + 1605494.

Almost surely, 21027311680 is an apocalyptic number.

1027311680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1027311680 is an abundant number, since it is smaller than the sum of its proper divisors (1418975020).

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

1027311680 is an equidigital number, since it uses as much as digits as its factorization.

1027311680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210366 (or 3210356 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1027311680 is about 32051.7032308737. The cubic root of 1027311680 is about 1009.0222475755.

Adding to 1027311680 its reverse (861137201), we get a palindrome (1888448881).

The spelling of 1027311680 in words is "one billion, twenty-seven million, three hundred eleven thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 3210349 6420698 12841396 16051745 25682792 32103490 51365584 64206980 102731168 128413960 205462336 256827920 513655840 1027311680