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10206831840 = 2535313718539
BaseRepresentation
bin10011000000101111…
…11110010011100000
3222100022221210001220
421200113332103200
5131400422104330
64404451455040
7510635432142
oct114027762340
928308853056
1010206831840
114368543917
121b8a2b7480
13c687c728a
146cb802c92
153eb116710
hex2605fe4e0

10206831840 has 192 divisors, whose sum is σ = 34087495680. Its totient is φ = 2562693120.

The previous prime is 10206831839. The next prime is 10206831883. The reversal of 10206831840 is 4813860201.

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, 541291 + ... + 559829.

It is an arithmetic number, because the mean of its divisors is an integer number (177539040).

Almost surely, 210206831840 is an apocalyptic number.

10206831840 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 10206831840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17043747840).

10206831840 is an abundant number, since it is smaller than the sum of its proper divisors (23880663840).

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

10206831840 is a wasteful number, since it uses less digits than its factorization.

10206831840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18625 (or 18617 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The spelling of 10206831840 in words is "ten billion, two hundred six million, eight hundred thirty-one thousand, eight hundred forty".