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12227447680 = 275723532239
BaseRepresentation
bin10110110001101000…
…00000101110000000
31011120011002200220121
423120310000232000
5200020211311210
65341152350024
7612002406340
oct133064005600
934504080817
1012227447680
115205091468
122452b45314
1311cb30c156
1483dd06d20
154b86ec6da
hex2d8d00b80

12227447680 has 256 divisors, whose sum is σ = 35533209600. Its totient is φ = 3932577792.

The previous prime is 12227447677. The next prime is 12227447731. The reversal of 12227447680 is 8674472221.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5460001 + ... + 5462239.

It is an arithmetic number, because the mean of its divisors is an integer number (138801600).

Almost surely, 212227447680 is an apocalyptic number.

12227447680 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 12227447680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17766604800).

12227447680 is an abundant number, since it is smaller than the sum of its proper divisors (23305761920).

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

12227447680 is a wasteful number, since it uses less digits than its factorization.

12227447680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341 (or 2329 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 43.

The spelling of 12227447680 in words is "twelve billion, two hundred twenty-seven million, four hundred forty-seven thousand, six hundred eighty".