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23210423444 = 22131572843021
BaseRepresentation
bin10101100111011100…
…101111010010010100
32012220120111200021202
4111213130233102110
5340013332022234
614355051532032
71451114226005
oct254734572224
965816450252
1023210423444
11993075173a
1245b915a018
13225b855990
1411a28251ac
1590ca2777e
hex56772f494

23210423444 has 24 divisors (see below), whose sum is σ = 44021352648. Its totient is φ = 10644266880.

The previous prime is 23210423437. The next prime is 23210423479. The reversal of 23210423444 is 44432401232.

It can be written as a sum of positive squares in 4 ways, for example, as 2168019844 + 21042403600 = 46562^2 + 145060^2 .

It is a super-3 number, since 3×232104234443 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1413347 + ... + 1429674.

It is an arithmetic number, because the mean of its divisors is an integer number (1834223027).

Almost surely, 223210423444 is an apocalyptic number.

It is an amenable number.

23210423444 is a deficient number, since it is larger than the sum of its proper divisors (20810929204).

23210423444 is a wasteful number, since it uses less digits than its factorization.

23210423444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843195 (or 2843193 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 23210423444 its reverse (44432401232), we get a palindrome (67642824676).

The spelling of 23210423444 in words is "twenty-three billion, two hundred ten million, four hundred twenty-three thousand, four hundred forty-four".

Divisors: 1 2 4 13 26 52 157 314 628 2041 4082 8164 2843021 5686042 11372084 36959273 73918546 147837092 446354297 892708594 1785417188 5802605861 11605211722 23210423444