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23003213040 = 2432531948907
BaseRepresentation
bin10101011011000110…
…010010110011110000
32012101010121022001100
4111123012102303300
5334102310304130
614322330404400
71443020041023
oct253306226360
965333538040
1023003213040
119834794475
12455b890700
132227945782
1411830c71ba
158e9746c60
hex55b192cf0

23003213040 has 60 divisors (see below), whose sum is σ = 77252459544. Its totient is φ = 6134189952.

The previous prime is 23003213003. The next prime is 23003213071. The reversal of 23003213040 is 4031230032.

23003213040 is a `hidden beast` number, since 2 + 300 + 321 + 3 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 15973734 + ... + 15975173.

Almost surely, 223003213040 is an apocalyptic number.

23003213040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23003213040 is an abundant number, since it is smaller than the sum of its proper divisors (54249246504).

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

23003213040 is a wasteful number, since it uses less digits than its factorization.

23003213040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31948926 (or 31948917 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 23003213040 its reverse (4031230032), we get a palindrome (27034443072).

The spelling of 23003213040 in words is "twenty-three billion, three million, two hundred thirteen thousand, forty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 144 180 240 360 720 31948907 63897814 95846721 127795628 159744535 191693442 255591256 287540163 319489070 383386884 479233605 511182512 575080326 638978140 766773768 958467210 1150160652 1277956280 1437700815 1533547536 1916934420 2300321304 2555912560 2875401630 3833868840 4600642608 5750803260 7667737680 11501606520 23003213040