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2140054520 = 235175695531
BaseRepresentation
bin111111110001110…
…1010001111111000
312112010220000220112
41333203222033320
513340323221040
6552204443452
7104014110002
oct17743521770
95463800815
102140054520
119a90066aa
124b8849588
132814a3466
14164315372
15c7d2a365
hex7f8ea3f8

2140054520 has 64 divisors (see below), whose sum is σ = 5108248800. Its totient is φ = 804106240.

The previous prime is 2140054513. The next prime is 2140054541. The reversal of 2140054520 is 254500412.

It is a happy number.

It is a congruent number.

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, 384155 + ... + 389685.

Almost surely, 22140054520 is an apocalyptic number.

2140054520 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 2140054520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2554124400).

2140054520 is an abundant number, since it is smaller than the sum of its proper divisors (2968194280).

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

2140054520 is a wasteful number, since it uses less digits than its factorization.

2140054520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128 (or 6124 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2140054520 is about 46260.7232974151. The cubic root of 2140054520 is about 1288.6696860122.

Adding to 2140054520 its reverse (254500412), we get a palindrome (2394554932).

The spelling of 2140054520 in words is "two billion, one hundred forty million, fifty-four thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 569 680 1138 2276 2845 4552 5531 5690 9673 11062 11380 19346 22124 22760 27655 38692 44248 48365 55310 77384 94027 96730 110620 188054 193460 221240 376108 386920 470135 752216 940270 1880540 3147139 3761080 6294278 12588556 15735695 25177112 31471390 53501363 62942780 107002726 125885560 214005452 267506815 428010904 535013630 1070027260 2140054520