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8004128124 = 2231973385841
BaseRepresentation
bin1110111010001010…
…10100110101111100
3202122211011211121210
413131011110311330
5112343024044444
63402124124420
7402230652336
oct73505246574
922584154553
108004128124
113438137a23
121674696710
139a735a0b5
1455d060456
1531ca637b9
hex1dd154d7c

8004128124 has 24 divisors (see below), whose sum is σ = 18771108048. Its totient is φ = 2654498560.

The previous prime is 8004128123. The next prime is 8004128131. The reversal of 8004128124 is 4218214008.

It is a junction number, because it is equal to n+sod(n) for n = 8004128091 and 8004128100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8004128123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690557 + ... + 1695284.

It is an arithmetic number, because the mean of its divisors is an integer number (782129502).

Almost surely, 28004128124 is an apocalyptic number.

It is an amenable number.

8004128124 is an abundant number, since it is smaller than the sum of its proper divisors (10766979924).

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

8004128124 is a wasteful number, since it uses less digits than its factorization.

8004128124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386045 (or 3386043 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 8004128124 is about 89465.7930384569. The cubic root of 8004128124 is about 2000.3439511787.

The spelling of 8004128124 in words is "eight billion, four million, one hundred twenty-eight thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 12 197 394 591 788 1182 2364 3385841 6771682 10157523 13543364 20315046 40630092 667010677 1334021354 2001032031 2668042708 4002064062 8004128124