Search a number
-
+
20202031330 = 25132931172859
BaseRepresentation
bin10010110100001000…
…101000100011100010
31221010220200112010121
4102310020220203202
5312333210000310
613140343350454
71313424301345
oct226410504342
957126615117
1020202031330
11862757a168
123ab975242a
131b9c4c36c0
14d9907645c
157d38770da
hex4b42288e2

20202031330 has 64 divisors (see below), whose sum is σ = 41818291200. Its totient is φ = 6969634560.

The previous prime is 20202031313. The next prime is 20202031403. The reversal of 20202031330 is 3313020202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30441 + ... + 203299.

It is an arithmetic number, because the mean of its divisors is an integer number (653410800).

Almost surely, 220202031330 is an apocalyptic number.

20202031330 is an abundant number, since it is smaller than the sum of its proper divisors (21616259870).

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

20202031330 is a wasteful number, since it uses less digits than its factorization.

20202031330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172939.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20202031330 its reverse (3313020202), we get a palindrome (23515051532).

The spelling of 20202031330 in words is "twenty billion, two hundred two million, thirty-one thousand, three hundred thirty".

Divisors: 1 2 5 10 13 26 29 31 58 62 65 130 145 155 290 310 377 403 754 806 899 1798 1885 2015 3770 4030 4495 8990 11687 23374 58435 116870 172859 345718 864295 1728590 2247167 4494334 5012911 5358629 10025822 10717258 11235835 22471670 25064555 26793145 50129110 53586290 65167843 69662177 130335686 139324354 155400241 310800482 325839215 348310885 651678430 696621770 777001205 1554002410 2020203133 4040406266 10101015665 20202031330