Search a number
-
+
13020020230 = 257353526913
BaseRepresentation
bin11000010000000110…
…11011111000000110
31020121101110120001111
430020003123320012
5203131111121410
65551544115234
7640435226440
oct141003337006
936541416044
1013020020230
1155815099a8
122634465b1a
1312c65913a9
148b729b490
155130a8b8a
hex3080dbe06

13020020230 has 32 divisors (see below), whose sum is σ = 26859968064. Its totient is φ = 4451352576.

The previous prime is 13020020203. The next prime is 13020020239. The reversal of 13020020230 is 3202002031.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13020020230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020020239) 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, 238747 + ... + 288166.

It is an arithmetic number, because the mean of its divisors is an integer number (839374002).

Almost surely, 213020020230 is an apocalyptic number.

13020020230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13020020230 is an abundant number, since it is smaller than the sum of its proper divisors (13839947834).

13020020230 is a wasteful number, since it uses less digits than its factorization.

13020020230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527280.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 13020020230 its reverse (3202002031), we get a palindrome (16222022261).

The spelling of 13020020230 in words is "thirteen billion, twenty million, twenty thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 353 706 1765 2471 3530 4942 12355 24710 526913 1053826 2634565 3688391 5269130 7376782 18441955 36883910 186000289 372000578 930001445 1302002023 1860002890 2604004046 6510010115 13020020230