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13297980 = 2235251883
BaseRepresentation
bin110010101110…
…100100111100
3221000121101210
4302232210330
511401013410
61153004420
7221013423
oct62564474
927017353
1013297980
117562a73
124553710
1329a7a37
141aa22ba
15127a220
hexcae93c

13297980 has 48 divisors (see below), whose sum is σ = 37425024. Its totient is φ = 3528000.

The previous prime is 13297969. The next prime is 13297987. The reversal of 13297980 is 8979231.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13297987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14619 + ... + 15501.

It is an arithmetic number, because the mean of its divisors is an integer number (779688).

Almost surely, 213297980 is an apocalyptic number.

13297980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13297980 is an abundant number, since it is smaller than the sum of its proper divisors (24127044).

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

13297980 is a wasteful number, since it uses less digits than its factorization.

13297980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 13297980 is about 3646.6395489546. The cubic root of 13297980 is about 236.9164547344.

The spelling of 13297980 in words is "thirteen million, two hundred ninety-seven thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 251 502 753 883 1004 1255 1506 1766 2510 2649 3012 3532 3765 4415 5020 5298 7530 8830 10596 13245 15060 17660 26490 52980 221633 443266 664899 886532 1108165 1329798 2216330 2659596 3324495 4432660 6648990 13297980