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20312471058 = 23111718317911
BaseRepresentation
bin10010111010101101…
…111011011000010010
31221102121111102221220
4102322231323120102
5313044443033213
613155330425510
71316235104145
oct227255733022
957377442856
1020312471058
118683951170
123b2a732296
131bb9350c59
14da99c405c
157dd3dee23
hex4bab7b612

20312471058 has 32 divisors (see below), whose sum is σ = 44323172352. Its totient is φ = 6154592400.

The previous prime is 20312471051. The next prime is 20312471077. The reversal of 20312471058 is 85017421302.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20312471051) 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 15 ways as a sum of consecutive naturals, for example, 1125123 + ... + 1143033.

It is an arithmetic number, because the mean of its divisors is an integer number (1385099136).

Almost surely, 220312471058 is an apocalyptic number.

20312471058 is an abundant number, since it is smaller than the sum of its proper divisors (24010701294).

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

20312471058 is a wasteful number, since it uses less digits than its factorization.

20312471058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35110.

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 20312471058 in words is "twenty billion, three hundred twelve million, four hundred seventy-one thousand, fifty-eight".

Divisors: 1 2 3 6 11 22 33 66 17183 17911 34366 35822 51549 53733 103098 107466 189013 197021 378026 394042 567039 591063 1134078 1182126 307764713 615529426 923294139 1846588278 3385411843 6770823686 10156235529 20312471058