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20077302876 = 2232372743851
BaseRepresentation
bin10010101100101100…
…110101010001011100
31220211012222122212020
4102230230311101130
5312104242143001
613120130140140
71310351154501
oct225454652134
956735878766
1020077302876
1185731288a4
123a83a21650
131b7c702497
14d866894a8
157c793a736
hex4acb3545c

20077302876 has 24 divisors (see below), whose sum is σ = 48883868544. Its totient is φ = 6401458800.

The previous prime is 20077302841. The next prime is 20077302901. The reversal of 20077302876 is 67820377002.

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 7 ways as a sum of consecutive naturals, for example, 36371650 + ... + 36372201.

It is an arithmetic number, because the mean of its divisors is an integer number (2036827856).

Almost surely, 220077302876 is an apocalyptic number.

It is an amenable number.

20077302876 is an abundant number, since it is smaller than the sum of its proper divisors (28806565668).

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

20077302876 is a wasteful number, since it uses less digits than its factorization.

20077302876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72743881 (or 72743879 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

Adding to 20077302876 its reverse (67820377002), we get a palindrome (87897679878).

The spelling of 20077302876 in words is "twenty billion, seventy-seven million, three hundred two thousand, eight hundred seventy-six".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 72743851 145487702 218231553 290975404 436463106 872926212 1673108573 3346217146 5019325719 6692434292 10038651438 20077302876