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13201040 = 245315323
BaseRepresentation
bin110010010110…
…111010010000
3220211200102102
4302112322100
511334413130
61150535532
7220130666
oct62267220
926750372
1013201040
1174a7156
1245075a8
132972888
141a78c36
15125b645
hexc96e90

13201040 has 40 divisors (see below), whose sum is σ = 31688448. Its totient is φ = 5109120.

The previous prime is 13201039. The next prime is 13201051. The reversal of 13201040 is 4010231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182 + ... + 5141.

Almost surely, 213201040 is an apocalyptic number.

13201040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13201040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15844224).

13201040 is an abundant number, since it is smaller than the sum of its proper divisors (18487408).

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

13201040 is a wasteful number, since it uses less digits than its factorization.

13201040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5367 (or 5361 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 13201040 is about 3633.3235473874. The cubic root of 13201040 is about 236.3393566597.

Adding to 13201040 its reverse (4010231), we get a palindrome (17211271).

The spelling of 13201040 in words is "thirteen million, two hundred one thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 31 40 62 80 124 155 248 310 496 620 1240 2480 5323 10646 21292 26615 42584 53230 85168 106460 165013 212920 330026 425840 660052 825065 1320104 1650130 2640208 3300260 6600520 13201040