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20441042442 = 2331512506873
BaseRepresentation
bin10011000010011000…
…011000111000001010
31221202120102112202000
4103002120120320022
5313330401324232
613220202251430
71322355664632
oct230230307012
957676375660
1020441042442
11873a487807
123b657b6b76
131c09b893b2
14dbcad16c2
157e983a27c
hex4c2618e0a

20441042442 has 32 divisors (see below), whose sum is σ = 45725381760. Its totient is φ = 6768554400.

The previous prime is 20441042423. The next prime is 20441042519. The reversal of 20441042442 is 24424014402.

20441042442 is a `hidden beast` number, since 2 + 0 + 4 + 410 + 4 + 244 + 2 = 666.

It is a super-2 number, since 2×204410424422 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245283 + ... + 1261590.

It is an arithmetic number, because the mean of its divisors is an integer number (1428918180).

Almost surely, 220441042442 is an apocalyptic number.

20441042442 is an abundant number, since it is smaller than the sum of its proper divisors (25284339318).

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

20441042442 is a wasteful number, since it uses less digits than its factorization.

20441042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507035 (or 2507029 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 20441042442 its reverse (24424014402), we get a palindrome (44865056844).

The spelling of 20441042442 in words is "twenty billion, four hundred forty-one million, forty-two thousand, four hundred forty-two".

Divisors: 1 2 3 6 9 18 27 54 151 302 453 906 1359 2718 4077 8154 2506873 5013746 7520619 15041238 22561857 45123714 67685571 135371142 378537823 757075646 1135613469 2271226938 3406840407 6813680814 10220521221 20441042442