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8700426240 = 211351125747
BaseRepresentation
bin10000001101001010…
…11111100000000000
3211110100101110001220
420012211133200000
5120304302114430
63555200155040
7425414255112
oct100645374000
924410343056
108700426240
113765189010
121829908a80
13a886a150c
145c77133b2
1535dc54110
hex20695f800

8700426240 has 192 divisors, whose sum is σ = 30366161280. Its totient is φ = 2109112320.

The previous prime is 8700426239. The next prime is 8700426247. The reversal of 8700426240 is 426240078.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8700426247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325047 + ... + 350793.

It is an arithmetic number, because the mean of its divisors is an integer number (158157090).

Almost surely, 28700426240 is an apocalyptic number.

8700426240 is a gapful number since it is divisible by the number (80) 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 8700426240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15183080640).

8700426240 is an abundant number, since it is smaller than the sum of its proper divisors (21665735040).

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

8700426240 is a wasteful number, since it uses less digits than its factorization.

8700426240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25788 (or 25768 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 8700426240 is about 93276.0753891372. The cubic root of 8700426240 is about 2056.7437038613.

The spelling of 8700426240 in words is "eight billion, seven hundred million, four hundred twenty-six thousand, two hundred forty".