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12020431422 = 2319910067363
BaseRepresentation
bin10110011000111100…
…10011101000111110
31011000201120011222210
423030132103220332
5144104212301142
65304435321250
7603606660366
oct131436235076
934021504883
1012020431422
11510924704a
1223b5750226
13119746941c
148206199a6
154a545949c
hex2cc793a3e

12020431422 has 16 divisors (see below), whose sum is σ = 24161673600. Its totient is φ = 3986675352.

The previous prime is 12020431391. The next prime is 12020431441. The reversal of 12020431422 is 22413402021.

It is a congruent number.

It is an unprimeable number.

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, 5032488 + ... + 5034875.

It is an arithmetic number, because the mean of its divisors is an integer number (1510104600).

Almost surely, 212020431422 is an apocalyptic number.

12020431422 is an abundant number, since it is smaller than the sum of its proper divisors (12141242178).

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

12020431422 is a wasteful number, since it uses less digits than its factorization.

12020431422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067567.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12020431422 its reverse (22413402021), we get a palindrome (34433833443).

The spelling of 12020431422 in words is "twelve billion, twenty million, four hundred thirty-one thousand, four hundred twenty-two".

Divisors: 1 2 3 6 199 398 597 1194 10067363 20134726 30202089 60404178 2003405237 4006810474 6010215711 12020431422