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2080001280 = 28357223347
BaseRepresentation
bin111101111111010…
…0100110100000000
312100221220000100110
41323332210310000
513224440020110
6542221351320
7102354501450
oct17376446400
95327800313
102080001280
11978119825
124a0708540
13271c081b6
1415a361d60
15c2916a20
hex7bfa4d00

2080001280 has 288 divisors, whose sum is σ = 7648026624. Its totient is φ = 471932928.

The previous prime is 2080001263. The next prime is 2080001291. The reversal of 2080001280 is 821000802.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5994067 + ... + 5994413.

It is an arithmetic number, because the mean of its divisors is an integer number (26555648).

Almost surely, 22080001280 is an apocalyptic number.

2080001280 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 2080001280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3824013312).

2080001280 is an abundant number, since it is smaller than the sum of its proper divisors (5568025344).

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

2080001280 is a wasteful number, since it uses less digits than its factorization.

2080001280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 2080001280 is about 45607.0310368917. The cubic root of 2080001280 is about 1276.5011216183.

The spelling of 2080001280 in words is "two billion, eighty million, one thousand, two hundred eighty".