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13330034420 = 2255411231981
BaseRepresentation
bin11000110101000100…
…00010111011110100
31021101222210220120112
430122202002323310
5204244442100140
610042420522152
7651221265053
oct143242027364
937358726515
1013330034420
11572050317a
122700250358
131345887341
1490651a39a
155303e4c65
hex31a882ef4

13330034420 has 24 divisors (see below), whose sum is σ = 28044838248. Its totient is φ = 5322153600.

The previous prime is 13330034401. The next prime is 13330034423. The reversal of 13330034420 is 2443003331.

It can be written as a sum of positive squares in 4 ways, for example, as 2525263504 + 10804770916 = 50252^2 + 103946^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13330034423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605171 + ... + 626810.

It is an arithmetic number, because the mean of its divisors is an integer number (1168534927).

Almost surely, 213330034420 is an apocalyptic number.

13330034420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13330034420 is an abundant number, since it is smaller than the sum of its proper divisors (14714803828).

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

13330034420 is a wasteful number, since it uses less digits than its factorization.

13330034420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232531 (or 1232529 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 13330034420 its reverse (2443003331), we get a palindrome (15773037751).

The spelling of 13330034420 in words is "thirteen billion, three hundred thirty million, thirty-four thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 541 1082 2164 2705 5410 10820 1231981 2463962 4927924 6159905 12319810 24639620 666501721 1333003442 2666006884 3332508605 6665017210 13330034420