Search a number
-
+
20120231010 = 23511311966787
BaseRepresentation
bin10010101111010000…
…100101110001100010
31220221012202122012010
4102233100211301202
5312201234343020
613124302213350
71311412066425
oct225720456142
956835678163
1020120231010
1185953893a0
123a96284256
131b88582a49
14d8c2619bc
157cb5b9de0
hex4af425c62

20120231010 has 64 divisors (see below), whose sum is σ = 54377754624. Its totient is φ = 4720286400.

The previous prime is 20120231009. The next prime is 20120231023. The reversal of 20120231010 is 1013202102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 973164 + ... + 993623.

It is an arithmetic number, because the mean of its divisors is an integer number (849652416).

Almost surely, 220120231010 is an apocalyptic number.

20120231010 is an abundant number, since it is smaller than the sum of its proper divisors (34257523614).

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

20120231010 is a wasteful number, since it uses less digits than its factorization.

20120231010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966839.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20120231010 its reverse (1013202102), we get a palindrome (21133433112).

The spelling of 20120231010 in words is "twenty billion, one hundred twenty million, two hundred thirty-one thousand, ten".

Divisors: 1 2 3 5 6 10 11 15 22 30 31 33 55 62 66 93 110 155 165 186 310 330 341 465 682 930 1023 1705 2046 3410 5115 10230 1966787 3933574 5900361 9833935 11800722 19667870 21634657 29501805 43269314 59003610 60970397 64903971 108173285 121940794 129807942 182911191 216346570 304851985 324519855 365822382 609703970 649039710 670674367 914555955 1341348734 1829111910 2012023101 3353371835 4024046202 6706743670 10060115505 20120231010