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8131013744 = 247210371191
BaseRepresentation
bin1111001001010010…
…10110110001110000
3202222122221021222012
413210221112301300
5113123014414434
63422455502052
7405331322300
oct74451266160
922878837865
108131013744
1134a2821a77
1216ab087928
139c7725149
14571c4d600
15328c793ce
hex1e4a56c70

8131013744 has 30 divisors (see below), whose sum is σ = 18325896264. Its totient is φ = 3484719840.

The previous prime is 8131013713. The next prime is 8131013747. The reversal of 8131013744 is 4473101318.

It is a super-2 number, since 2×81310137442 (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8131013744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8131013747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5184812 + ... + 5186379.

Almost surely, 28131013744 is an apocalyptic number.

It is an amenable number.

8131013744 is an abundant number, since it is smaller than the sum of its proper divisors (10194882520).

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

8131013744 is a wasteful number, since it uses less digits than its factorization.

8131013744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10371213 (or 10371200 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 8131013744 is about 90172.1339660984. The cubic root of 8131013744 is about 2010.8587490857.

The spelling of 8131013744 in words is "eight billion, one hundred thirty-one million, thirteen thousand, seven hundred forty-four".

Divisors: 1 2 4 7 8 14 16 28 49 56 98 112 196 392 784 10371191 20742382 41484764 72598337 82969528 145196674 165939056 290393348 508188359 580786696 1016376718 1161573392 2032753436 4065506872 8131013744