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13023102020 = 225651155101
BaseRepresentation
bin11000010000011110…
…01100010001000100
31020121121021010110212
430020033030101010
5203132403231040
65552134134552
7640503353315
oct141017142104
936547233425
1013023102020
115583224335
1226354b1458
1312c7100036
148b786060c
155134b6d65
hex3083cc444

13023102020 has 12 divisors (see below), whose sum is σ = 27348514284. Its totient is φ = 5209240800.

The previous prime is 13023102013. The next prime is 13023102031. The reversal of 13023102020 is 2020132031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10264121344 + 2758980676 = 101312^2 + 52526^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13023101986 and 13023102004.

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, 325577531 + ... + 325577570.

It is an arithmetic number, because the mean of its divisors is an integer number (2279042857).

Almost surely, 213023102020 is an apocalyptic number.

13023102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13023102020 is an abundant number, since it is smaller than the sum of its proper divisors (14325412264).

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

13023102020 is a wasteful number, since it uses less digits than its factorization.

13023102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651155110 (or 651155108 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 13023102020 its reverse (2020132031), we get a palindrome (15043234051).

The spelling of 13023102020 in words is "thirteen billion, twenty-three million, one hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 651155101 1302310202 2604620404 3255775505 6511551010 13023102020