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20010471052 = 22111397360653
BaseRepresentation
bin10010101000101101…
…111000111010001100
31220122120020020211111
4102220231320322030
5311440140033202
613105341501404
71305610124515
oct225055707214
956576206744
1020010471052
118539431090
123a65571864
131b6b902a20
14d7b84da0c
157c1b386d7
hex4a8b78e8c

20010471052 has 48 divisors (see below), whose sum is σ = 41564652192. Its totient is φ = 8309422080.

The previous prime is 20010471007. The next prime is 20010471073. The reversal of 20010471052 is 25017401002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 15 ways as a sum of consecutive naturals, for example, 124843 + ... + 235810.

It is an arithmetic number, because the mean of its divisors is an integer number (865930254).

Almost surely, 220010471052 is an apocalyptic number.

20010471052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20010471052 is an abundant number, since it is smaller than the sum of its proper divisors (21554181140).

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

20010471052 is a wasteful number, since it uses less digits than its factorization.

20010471052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360778 (or 360776 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

Adding to 20010471052 its reverse (25017401002), we get a palindrome (45027872054).

The spelling of 20010471052 in words is "twenty billion, ten million, four hundred seventy-one thousand, fifty-two".

Divisors: 1 2 4 11 13 22 26 44 52 97 143 194 286 388 572 1067 1261 2134 2522 4268 5044 13871 27742 55484 360653 721306 1442612 3967183 4688489 7934366 9376978 15868732 18753956 34983341 51573379 69966682 103146758 139933364 206293516 384816751 454783433 769633502 909566866 1539267004 1819133732 5002617763 10005235526 20010471052