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20013030330 = 2354315513977
BaseRepresentation
bin10010101000110111…
…101001101110111010
31220122202001021111120
4102220313221232322
5311441313432310
613105512410110
71305640644126
oct225067515672
956582037446
1020013030330
11853a919997
123a663a6936
131b6c2ba8a7
14d7bd18586
157c1e91b70
hex4a8de9bba

20013030330 has 32 divisors (see below), whose sum is σ = 49148282304. Its totient is φ = 5212695936.

The previous prime is 20013030299. The next prime is 20013030337. The reversal of 20013030330 is 3303031002.

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

It is not an unprimeable number, because it can be changed into a prime (20013030337) 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, 7755699 + ... + 7758278.

It is an arithmetic number, because the mean of its divisors is an integer number (1535883822).

Almost surely, 220013030330 is an apocalyptic number.

20013030330 is an abundant number, since it is smaller than the sum of its proper divisors (29135251974).

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

20013030330 is a wasteful number, since it uses less digits than its factorization.

20013030330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15514030.

The product of its (nonzero) digits is 162, while the sum is 15.

Adding to 20013030330 its reverse (3303031002), we get a palindrome (23316061332).

The spelling of 20013030330 in words is "twenty billion, thirteen million, thirty thousand, three hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 43 86 129 215 258 430 645 1290 15513977 31027954 46541931 77569885 93083862 155139770 232709655 465419310 667101011 1334202022 2001303033 3335505055 4002606066 6671010110 10006515165 20013030330