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12490980 = 22351910957
BaseRepresentation
bin101111101001…
…100011100100
3212111121101220
4233221203210
511144202410
61123420340
7211112565
oct57514344
925447356
1012490980
117061727
1242246b0
132784618
14193216c
15116b070
hexbe98e4

12490980 has 48 divisors (see below), whose sum is σ = 36818880. Its totient is φ = 3155328.

The previous prime is 12490979. The next prime is 12490993. The reversal of 12490980 is 8909421.

It is a congruent number.

It is an unprimeable number.

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, 4339 + ... + 6618.

It is an arithmetic number, because the mean of its divisors is an integer number (767060).

Almost surely, 212490980 is an apocalyptic number.

12490980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12490980 is an abundant number, since it is smaller than the sum of its proper divisors (24327900).

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

12490980 is a wasteful number, since it uses less digits than its factorization.

12490980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10988 (or 10986 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12490980 is about 3534.2580550944. The cubic root of 12490980 is about 232.0236054063.

The spelling of 12490980 in words is "twelve million, four hundred ninety thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 285 380 570 1140 10957 21914 32871 43828 54785 65742 109570 131484 164355 208183 219140 328710 416366 624549 657420 832732 1040915 1249098 2081830 2498196 3122745 4163660 6245490 12490980