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20130310424 = 2372379197837
BaseRepresentation
bin10010101111110111…
…000010100100011000
31220221220201201112202
4102233313002210120
5312211324413144
613125302225332
71311563546450
oct225767024430
956856651482
1020130310424
1185a0043194
123a99725248
131b8a6a17b3
14d8d726d60
157cc40b64e
hex4afdc2918

20130310424 has 64 divisors (see below), whose sum is σ = 45581875200. Its totient is φ = 8147677824.

The previous prime is 20130310411. The next prime is 20130310433. The reversal of 20130310424 is 42401303102.

It is a junction number, because it is equal to n+sod(n) for n = 20130310396 and 20130310405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2834 + ... + 200670.

It is an arithmetic number, because the mean of its divisors is an integer number (712216800).

Almost surely, 220130310424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20130310424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22790937600).

20130310424 is an abundant number, since it is smaller than the sum of its proper divisors (25451564776).

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

20130310424 is a wasteful number, since it uses less digits than its factorization.

20130310424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197952 (or 197948 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20130310424 its reverse (42401303102), we get a palindrome (62531613526).

The spelling of 20130310424 in words is "twenty billion, one hundred thirty million, three hundred ten thousand, four hundred twenty-four".

Divisors: 1 2 4 7 8 14 23 28 46 56 79 92 158 161 184 316 322 553 632 644 1106 1288 1817 2212 3634 4424 7268 12719 14536 25438 50876 101752 197837 395674 791348 1384859 1582696 2769718 4550251 5539436 9100502 11078872 15629123 18201004 31258246 31851757 36402008 62516492 63703514 109403861 125032984 127407028 218807722 254814056 359469829 437615444 718939658 875230888 1437879316 2516288803 2875758632 5032577606 10065155212 20130310424