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2080477980 = 2233572918979
BaseRepresentation
bin111110000000001…
…1001001100011100
312100222210020021000
41330000121030130
513230100243410
6542235510300
7102361525320
oct17400311434
95328706230
102080477980
11978414999
124a08b8390
13272044179
1415a447980
15c29acdc0
hex7c01931c

2080477980 has 192 divisors, whose sum is σ = 7652736000. Its totient is φ = 459115776.

The previous prime is 2080477963. The next prime is 2080477991. The reversal of 2080477980 is 897740802.

2080477980 is a `hidden beast` number, since 20 + 80 + 477 + 9 + 80 = 666.

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 (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100131 + ... + 119109.

It is an arithmetic number, because the mean of its divisors is an integer number (39858000).

Almost surely, 22080477980 is an apocalyptic number.

2080477980 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 2080477980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3826368000).

2080477980 is an abundant number, since it is smaller than the sum of its proper divisors (5572258020).

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

2080477980 is a wasteful number, since it uses less digits than its factorization.

2080477980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19033 (or 19025 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 2080477980 is about 45612.2569053539. The cubic root of 2080477980 is about 1276.5986314307.

The spelling of 2080477980 in words is "two billion, eighty million, four hundred seventy-seven thousand, nine hundred eighty".