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20023024424 = 2313192529081
BaseRepresentation
bin10010101001011101…
…110001101100101000
31220200102212000211012
4102221131301230220
5312001343240144
613110510523052
71306121620334
oct225135615450
956612760735
1020023024424
118545525677
123a69806488
131b713a9860
14d7d39a7c4
157c2cb7e9e
hex4a9771b28

20023024424 has 16 divisors (see below), whose sum is σ = 40431107220. Its totient is φ = 9241395840.

The previous prime is 20023024423. The next prime is 20023024447. The reversal of 20023024424 is 42442032002.

It can be written as a sum of positive squares in 2 ways, for example, as 19315996324 + 707028100 = 138982^2 + 26590^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20023024424.

It is not an unprimeable number, because it can be changed into a prime (20023024423) 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 3 ways as a sum of consecutive naturals, for example, 96264437 + ... + 96264644.

Almost surely, 220023024424 is an apocalyptic number.

It is an amenable number.

20023024424 is an abundant number, since it is smaller than the sum of its proper divisors (20408082796).

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

20023024424 is a wasteful number, since it uses less digits than its factorization.

20023024424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192529100 (or 192529096 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 20023024424 its reverse (42442032002), we get a palindrome (62465056426).

The spelling of 20023024424 in words is "twenty billion, twenty-three million, twenty-four thousand, four hundred twenty-four".

Divisors: 1 2 4 8 13 26 52 104 192529081 385058162 770116324 1540232648 2502878053 5005756106 10011512212 20023024424