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8016989904 = 243571161439
BaseRepresentation
bin1110111011101100…
…11000111011010000
3202200201101021200000
413131312120323100
5112404322134104
63403303530000
7402445201260
oct73566307320
922621337600
108016989904
1134444221a0
121678a59900
139a9c11411
14560a4b7a0
1531dc54639
hex1ddd98ed0

8016989904 has 480 divisors, whose sum is σ = 29551441920. Its totient is φ = 2043532800.

The previous prime is 8016989861. The next prime is 8016989909. The reversal of 8016989904 is 4099896108.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8016989909) 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 95 ways as a sum of consecutive naturals, for example, 18261717 + ... + 18262155.

It is an arithmetic number, because the mean of its divisors is an integer number (61565504).

Almost surely, 28016989904 is an apocalyptic number.

8016989904 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8016989904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14775720960).

8016989904 is an abundant number, since it is smaller than the sum of its proper divisors (21534452016).

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

8016989904 is a wasteful number, since it uses less digits than its factorization.

8016989904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 8016989904 is about 89537.6451778803. The cubic root of 8016989904 is about 2001.4148242335.

The spelling of 8016989904 in words is "eight billion, sixteen million, nine hundred eighty-nine thousand, nine hundred four".