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20472339288 = 2331974330021
BaseRepresentation
bin10011000100001111…
…110001101101011000
31221211202022120221110
4103010033301231120
5313411404324123
613223241140320
71323216004242
oct230417615530
957752276843
1020472339288
118756113575
123b7418a6a0
131c134c673b
14dc2d1b092
157ec46d493
hex4c43f1b58

20472339288 has 32 divisors (see below), whose sum is σ = 51440661360. Its totient is φ = 6789471360.

The previous prime is 20472339287. The next prime is 20472339311. The reversal of 20472339288 is 88293327402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20472339281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2160283 + ... + 2169738.

Almost surely, 220472339288 is an apocalyptic number.

It is an amenable number.

20472339288 is an abundant number, since it is smaller than the sum of its proper divisors (30968322072).

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

20472339288 is a wasteful number, since it uses less digits than its factorization.

20472339288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330227 (or 4330223 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 20472339288 in words is "twenty billion, four hundred seventy-two million, three hundred thirty-nine thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 24 197 394 591 788 1182 1576 2364 4728 4330021 8660042 12990063 17320084 25980126 34640168 51960252 103920504 853014137 1706028274 2559042411 3412056548 5118084822 6824113096 10236169644 20472339288