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20223023120 = 245252787789
BaseRepresentation
bin10010110101011000…
…101101100000010000
31221012101012000110022
4102311120231200100
5312404043214440
613142413323012
71314100601036
oct226530554020
957171160408
1020223023120
118638407653
123b04796468
131ba3963391
14d9bb7c556
157d5621cb5
hex4b562d810

20223023120 has 20 divisors (see below), whose sum is σ = 47018528940. Its totient is φ = 8089209216.

The previous prime is 20223023087. The next prime is 20223023137. The reversal of 20223023120 is 2132032202.

It can be written as a sum of positive squares in 2 ways, for example, as 13830700816 + 6392322304 = 117604^2 + 79952^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×202230231202 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126393815 + ... + 126393974.

It is an arithmetic number, because the mean of its divisors is an integer number (2350926447).

Almost surely, 220223023120 is an apocalyptic number.

20223023120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20223023120 is an abundant number, since it is smaller than the sum of its proper divisors (26795505820).

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

20223023120 is a wasteful number, since it uses less digits than its factorization.

20223023120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252787802 (or 252787796 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20223023120 its reverse (2132032202), we get a palindrome (22355055322).

The spelling of 20223023120 in words is "twenty billion, two hundred twenty-three million, twenty-three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 252787789 505575578 1011151156 1263938945 2022302312 2527877890 4044604624 5055755780 10111511560 20223023120