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13213203232 = 257310951893
BaseRepresentation
bin11000100111001000…
…10111101100100000
31021002211222021022111
430103210113230200
5204030040000412
610023044445104
7645302242255
oct142344275440
937084867274
1013213203232
115670566179
1226890a9794
1313275cc868
148d4bc742c
155250182a7
hex313917b20

13213203232 has 48 divisors (see below), whose sum is σ = 26612281080. Its totient is φ = 6456195072.

The previous prime is 13213203221. The next prime is 13213203239. The reversal of 13213203232 is 23230231231.

It can be written as a sum of positive squares in 4 ways, for example, as 10063299856 + 3149903376 = 100316^2 + 56124^2 .

It is not an unprimeable number, because it can be changed into a prime (13213203239) 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, 228678 + ... + 280570.

Almost surely, 213213203232 is an apocalyptic number.

It is an amenable number.

13213203232 is an abundant number, since it is smaller than the sum of its proper divisors (13399077848).

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

13213203232 is a wasteful number, since it uses less digits than its factorization.

13213203232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52085 (or 52077 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 13213203232 its reverse (23230231231), we get a palindrome (36443434463).

The spelling of 13213203232 in words is "thirteen billion, two hundred thirteen million, two hundred three thousand, two hundred thirty-two".

Divisors: 1 2 4 8 16 32 73 109 146 218 292 436 584 872 1168 1744 2336 3488 7957 15914 31828 51893 63656 103786 127312 207572 254624 415144 830288 1660576 3788189 5656337 7576378 11312674 15152756 22625348 30305512 45250696 60611024 90501392 121222048 181002784 412912601 825825202 1651650404 3303300808 6606601616 13213203232