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20019010120 = 2353116144363
BaseRepresentation
bin10010101001001110…
…011101101001001000
31220200011022002020021
4102221032131221020
5311444331310440
613110244510224
71306042530664
oct225116355110
956604262207
1020019010120
11854323366a
123a683ab374
131b70602625
14d7ca338a4
157c277384a
hex4a939da48

20019010120 has 32 divisors (see below), whose sum is σ = 46495768320. Its totient is φ = 7749293760.

The previous prime is 20019010111. The next prime is 20019010201. The reversal of 20019010120 is 2101091002.

It is a junction number, because it is equal to n+sod(n) for n = 20019010094 and 20019010103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8070942 + ... + 8073421.

It is an arithmetic number, because the mean of its divisors is an integer number (1452992760).

Almost surely, 220019010120 is an apocalyptic number.

20019010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20019010120 is an abundant number, since it is smaller than the sum of its proper divisors (26476758200).

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

20019010120 is a wasteful number, since it uses less digits than its factorization.

20019010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16144405 (or 16144401 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 20019010120 in words is "twenty billion, nineteen million, ten thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 155 248 310 620 1240 16144363 32288726 64577452 80721815 129154904 161443630 322887260 500475253 645774520 1000950506 2001901012 2502376265 4003802024 5004752530 10009505060 20019010120