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7212794680 = 23571317229509
BaseRepresentation
bin1101011011110101…
…01000001100111000
3200121200010221012201
412231322220030320
5104232433412210
63151415115544
7343511512630
oct65572501470
920550127181
107212794680
113071486443
121493672bb4
138ac41cb60
144c5d0d6c0
152c334e53a
hex1adea8338

7212794680 has 256 divisors, whose sum is σ = 21282912000. Its totient is φ = 2134867968.

The previous prime is 7212794669. The next prime is 7212794713. The reversal of 7212794680 is 864972127.

It is a self number, because there is not a number n which added to its sum of digits gives 7212794680.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14170266 + ... + 14170774.

It is an arithmetic number, because the mean of its divisors is an integer number (83136375).

Almost surely, 27212794680 is an apocalyptic number.

7212794680 is a gapful number since it is divisible by the number (70) 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 7212794680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10641456000).

7212794680 is an abundant number, since it is smaller than the sum of its proper divisors (14070117320).

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

7212794680 is a wasteful number, since it uses less digits than its factorization.

7212794680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 7212794680 is about 84928.1736527991. The cubic root of 7212794680 is about 1932.1219004710.

The spelling of 7212794680 in words is "seven billion, two hundred twelve million, seven hundred ninety-four thousand, six hundred eighty".