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20020202120 = 2357915141957
BaseRepresentation
bin10010101001010011…
…000000101010001000
31220200020112122100102
4102221103000222020
5312000132431440
613110330224532
71306055624132
oct225123005210
956606478312
1020020202120
118543978196
123a68885148
131b7092c059
14d7cc64052
157c290bb15
hex4a94c0a88

20020202120 has 64 divisors (see below), whose sum is σ = 45918835200. Its totient is φ = 7854163200.

The previous prime is 20020202119. The next prime is 20020202141. The reversal of 20020202120 is 2120202002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456182 + ... + 498138.

It is an arithmetic number, because the mean of its divisors is an integer number (717481800).

Almost surely, 220020202120 is an apocalyptic number.

20020202120 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 20020202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22959417600).

20020202120 is an abundant number, since it is smaller than the sum of its proper divisors (25898633080).

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

20020202120 is a wasteful number, since it uses less digits than its factorization.

20020202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42198 (or 42194 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20020202120 its reverse (2120202002), we get a palindrome (22140404122).

The spelling of 20020202120 in words is "twenty billion, twenty million, two hundred two thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 79 151 158 302 316 395 604 632 755 790 1208 1510 1580 3020 3160 6040 11929 23858 41957 47716 59645 83914 95432 119290 167828 209785 238580 335656 419570 477160 839140 1678280 3314603 6335507 6629206 12671014 13258412 16573015 25342028 26516824 31677535 33146030 50684056 63355070 66292060 126710140 132584120 253420280 500505053 1001010106 2002020212 2502525265 4004040424 5005050530 10010101060 20020202120