Search a number
-
+
20303020230 = 2352329424667
BaseRepresentation
bin10010111010001001…
…111000000011000110
31221101221201021212020
4102322021320003012
5313040033121410
613154352104010
71316061552543
oct227211700306
957357637766
1020303020230
118679586669
123b27535006
131bb73c234c
14da8643bca
157dc674a70
hex4ba2780c6

20303020230 has 32 divisors (see below), whose sum is σ = 50845826304. Its totient is φ = 5178741216.

The previous prime is 20303020211. The next prime is 20303020261. The reversal of 20303020230 is 3202030302.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 14711644 + ... + 14713023.

It is an arithmetic number, because the mean of its divisors is an integer number (1588932072).

Almost surely, 220303020230 is an apocalyptic number.

20303020230 is an abundant number, since it is smaller than the sum of its proper divisors (30542806074).

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

20303020230 is a wasteful number, since it uses less digits than its factorization.

20303020230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29424700.

The product of its (nonzero) digits is 216, while the sum is 15.

Adding to 20303020230 its reverse (3202030302), we get a palindrome (23505050532).

The spelling of 20303020230 in words is "twenty billion, three hundred three million, twenty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 29424667 58849334 88274001 147123335 176548002 294246670 441370005 676767341 882740010 1353534682 2030302023 3383836705 4060604046 6767673410 10151510115 20303020230