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2143233620 = 2251140923819
BaseRepresentation
bin111111110111111…
…0010011001010100
312112100212112210222
41333233302121110
513342131433440
6552400533512
7104053120343
oct17757623124
95470775728
102143233620
119aa888160
124b9921298
13282047498
14164901b5a
15c82572b5
hex7fbf2654

2143233620 has 48 divisors (see below), whose sum is σ = 4922164800. Its totient is φ = 777419520.

The previous prime is 2143233607. The next prime is 2143233623. The reversal of 2143233620 is 263323412.

It is a self number, because there is not a number n which added to its sum of digits gives 2143233620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143233623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78071 + ... + 101889.

It is an arithmetic number, because the mean of its divisors is an integer number (102545100).

Almost surely, 22143233620 is an apocalyptic number.

2143233620 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 2143233620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2461082400).

2143233620 is an abundant number, since it is smaller than the sum of its proper divisors (2778931180).

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

2143233620 is a wasteful number, since it uses less digits than its factorization.

2143233620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24248 (or 24246 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 2143233620 is about 46295.0712279396. The cubic root of 2143233620 is about 1289.3074864044.

The spelling of 2143233620 in words is "two billion, one hundred forty-three million, two hundred thirty-three thousand, six hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 409 818 1636 2045 4090 4499 8180 8998 17996 22495 23819 44990 47638 89980 95276 119095 238190 262009 476380 524018 1048036 1310045 2620090 5240180 9741971 19483942 38967884 48709855 97419710 107161681 194839420 214323362 428646724 535808405 1071616810 2143233620