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2118804480 = 21035513131
BaseRepresentation
bin111111001001010…
…0110010000000000
312110122220102100000
41332102212100000
513314403220410
6550125200000
7103335353352
oct17622462000
95418812300
102118804480
11998012191
124b1700000
13279c73080
141615830d2
15c602ddc0
hex7e4a6400

2118804480 has 528 divisors, whose sum is σ = 8261757504. Its totient is φ = 517570560.

The previous prime is 2118804419. The next prime is 2118804481. The reversal of 2118804480 is 844088112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2118804481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16174015 + ... + 16174145.

It is an arithmetic number, because the mean of its divisors is an integer number (15647268).

Almost surely, 22118804480 is an apocalyptic number.

2118804480 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 2118804480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4130878752).

2118804480 is an abundant number, since it is smaller than the sum of its proper divisors (6142953024).

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

2118804480 is a wasteful number, since it uses less digits than its factorization.

2118804480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 2118804480 is about 46030.4733844874. The cubic root of 2118804480 is about 1284.3901338725.

The spelling of 2118804480 in words is "two billion, one hundred eighteen million, eight hundred four thousand, four hundred eighty".