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2069489520 = 243357219553
BaseRepresentation
bin111101101011001…
…1110011101110000
312100020002221221000
41323112132131300
513214242131040
6541204202000
7102166241100
oct17326363560
95306087830
102069489520
1197219a11a
12499099300
1326c997717
14158bc7200
15c1a3c130
hex7b59e770

2069489520 has 240 divisors, whose sum is σ = 8292460320. Its totient is φ = 473001984.

The previous prime is 2069489489. The next prime is 2069489533. The reversal of 2069489520 is 259849602.

2069489520 is a `hidden beast` number, since 20 + 69 + 48 + 9 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 96064 + ... + 115616.

It is an arithmetic number, because the mean of its divisors is an integer number (34551918).

Almost surely, 22069489520 is an apocalyptic number.

2069489520 is a gapful number since it is divisible by the number (20) 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 2069489520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4146230160).

2069489520 is an abundant number, since it is smaller than the sum of its proper divisors (6222970800).

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

2069489520 is a wasteful number, since it uses less digits than its factorization.

2069489520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19589 (or 19570 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2069489520 is about 45491.6423093297. The cubic root of 2069489520 is about 1274.3471259552.

The spelling of 2069489520 in words is "two billion, sixty-nine million, four hundred eighty-nine thousand, five hundred twenty".