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20020212054 = 2321112234003
BaseRepresentation
bin10010101001010011…
…000011000101010110
31220200020120010222100
4102221103003011112
5312000133241204
613110330342530
71306055665113
oct225123030526
956606503870
1020020212054
1185439846a7
123a6888aa46
131b7093372b
14d7cc6790a
157c290ea39
hex4a94c3156

20020212054 has 12 divisors (see below), whose sum is σ = 43377126156. Its totient is φ = 6673404012.

The previous prime is 20020212053. The next prime is 20020212071. The reversal of 20020212054 is 45021202002.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1112234003 = 20020212054 / (2 + 0 + 0 + 2 + 0 + 2 + 1 + 2 + 0 + 5 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020212053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556116984 + ... + 556117019.

It is an arithmetic number, because the mean of its divisors is an integer number (3614760513).

Almost surely, 220020212054 is an apocalyptic number.

20020212054 is an abundant number, since it is smaller than the sum of its proper divisors (23356914102).

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

20020212054 is a wasteful number, since it uses less digits than its factorization.

20020212054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112234011 (or 1112234008 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

Adding to 20020212054 its reverse (45021202002), we get a palindrome (65041414056).

The spelling of 20020212054 in words is "twenty billion, twenty million, two hundred twelve thousand, fifty-four".

Divisors: 1 2 3 6 9 18 1112234003 2224468006 3336702009 6673404018 10010106027 20020212054