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2130012220 = 225779192587
BaseRepresentation
bin111111011110101…
…0110100000111100
312111102222211110111
41332331112200330
513330240342340
6551205315404
7103532543110
oct17675264074
95442884414
102130012220
119a3377786
124b5405b64
1327c39857b
14162c5d740
15c6ee4aea
hex7ef5683c

2130012220 has 48 divisors (see below), whose sum is σ = 5176765440. Its totient is φ = 721041984.

The previous prime is 2130012217. The next prime is 2130012251. The reversal of 2130012220 is 222100312.

It is a self number, because there is not a number n which added to its sum of digits gives 2130012220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85234 + ... + 107353.

It is an arithmetic number, because the mean of its divisors is an integer number (107849280).

Almost surely, 22130012220 is an apocalyptic number.

2130012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130012220 is an abundant number, since it is smaller than the sum of its proper divisors (3046753220).

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

2130012220 is a wasteful number, since it uses less digits than its factorization.

2130012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192682 (or 192680 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2130012220 is about 46152.0554255171. The cubic root of 2130012220 is about 1286.6508117578.

Adding to 2130012220 its reverse (222100312), we get a palindrome (2352112532).

The spelling of 2130012220 in words is "two billion, one hundred thirty million, twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 79 140 158 316 395 553 790 1106 1580 2212 2765 5530 11060 192587 385174 770348 962935 1348109 1925870 2696218 3851740 5392436 6740545 13481090 15214373 26962180 30428746 60857492 76071865 106500611 152143730 213001222 304287460 426002444 532503055 1065006110 2130012220