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20331003020 = 2251216183591
BaseRepresentation
bin10010111011110100…
…100111110010001100
31221110220100222000212
4102323310213302030
5313114214044040
613201231541552
71316551450166
oct227364476214
957426328025
1020331003020
118693359539
123b3498a8b8
131bc013c103
14dac249936
157ded50d65
hex4bbd27c8c

20331003020 has 24 divisors (see below), whose sum is σ = 42699127968. Its totient is φ = 8131635200.

The previous prime is 20331003013. The next prime is 20331003023. The reversal of 20331003020 is 2030013302.

It is a junction number, because it is equal to n+sod(n) for n = 20331002986 and 20331003004.

It is not an unprimeable number, because it can be changed into a prime (20331003023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201425 + ... + 285015.

It is an arithmetic number, because the mean of its divisors is an integer number (1779130332).

Almost surely, 220331003020 is an apocalyptic number.

20331003020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331003020 is an abundant number, since it is smaller than the sum of its proper divisors (22368124948).

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

20331003020 is a wasteful number, since it uses less digits than its factorization.

20331003020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95761 (or 95759 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 20331003020 its reverse (2030013302), we get a palindrome (22361016322).

The spelling of 20331003020 in words is "twenty billion, three hundred thirty-one million, three thousand, twenty".

Divisors: 1 2 4 5 10 20 12161 24322 48644 60805 83591 121610 167182 243220 334364 417955 835910 1671820 1016550151 2033100302 4066200604 5082750755 10165501510 20331003020