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20020530012 = 22371723958661
BaseRepresentation
bin10010101001010100…
…010000101101011100
31220200021011022010120
4102221110100231130
5312000223430022
613110341234540
71306061461110
oct225124205534
956607138116
1020020530012
11854408157a
123a68a02a50
131b70a15382
14d7cd0b740
157c2973d5c
hex4a9510b5c

20020530012 has 96 divisors (see below), whose sum is σ = 56766044160. Its totient is φ = 5361054720.

The previous prime is 20020530001. The next prime is 20020530017. The reversal of 20020530012 is 21003502002.

It is a super-2 number, since 2×200205300122 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20020529973 and 20020530000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020530017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311962 + ... + 370622.

It is an arithmetic number, because the mean of its divisors is an integer number (591312960).

Almost surely, 220020530012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020530012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28383022080).

20020530012 is an abundant number, since it is smaller than the sum of its proper divisors (36745514148).

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

20020530012 is a wasteful number, since it uses less digits than its factorization.

20020530012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58931 (or 58929 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The spelling of 20020530012 in words is "twenty billion, twenty million, five hundred thirty thousand, twelve".

Divisors: 1 2 3 4 6 7 12 14 17 21 28 34 42 51 68 84 102 119 204 238 239 357 476 478 714 717 956 1428 1434 1673 2868 3346 4063 5019 6692 8126 10038 12189 16252 20076 24378 28441 48756 56882 58661 85323 113764 117322 170646 175983 234644 341292 351966 410627 703932 821254 997237 1231881 1642508 1994474 2463762 2991711 3988948 4927524 5983422 6980659 11966844 13961318 14019979 20941977 27922636 28039958 41883954 42059937 56079916 83767908 84119874 98139853 168239748 196279706 238339643 294419559 392559412 476679286 588839118 715018929 953358572 1177678236 1430037858 1668377501 2860075716 3336755002 5005132503 6673510004 10010265006 20020530012