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20010231204 = 2231667519267
BaseRepresentation
bin10010101000101100…
…111110010110100100
31220122112210001211020
4102220230332112210
5311440104344304
613105332411140
71305605105325
oct225054762644
956575701736
1020010231204
118539287967
123a65476ab0
131b6b84a7c2
14d7b7ca44c
157c1adc5d9
hex4a8b3e5a4

20010231204 has 12 divisors (see below), whose sum is σ = 46690539504. Its totient is φ = 6670077064.

The previous prime is 20010231161. The next prime is 20010231211. The reversal of 20010231204 is 40213201002.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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, 833759622 + ... + 833759645.

It is an arithmetic number, because the mean of its divisors is an integer number (3890878292).

Almost surely, 220010231204 is an apocalyptic number.

It is an amenable number.

20010231204 is an abundant number, since it is smaller than the sum of its proper divisors (26680308300).

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

20010231204 is a wasteful number, since it uses less digits than its factorization.

20010231204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667519274 (or 1667519272 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20010231204 its reverse (40213201002), we get a palindrome (60223432206).

The spelling of 20010231204 in words is "twenty billion, ten million, two hundred thirty-one thousand, two hundred four".

Divisors: 1 2 3 4 6 12 1667519267 3335038534 5002557801 6670077068 10005115602 20010231204