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BaseRepresentation
bin1001010000010110100…
…10110000010100111100
31010101212011011210020110
410220023102300110330
520202244330431240
6402032304550020
731655521200615
oct4501322602474
91111764153213
10318017045820
11112963371511
1251773322310
1323cb1749a76
141156bd28c0c
1584142d2c80
hex4a0b4b053c

318017045820 has 96 divisors (see below), whose sum is σ = 900782604288. Its totient is φ = 83824376832.

The previous prime is 318017045813. The next prime is 318017045821. The reversal of 318017045820 is 28540710813.

It is a super-2 number, since 2×3180170458202 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318017045821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2424357 + ... + 2552163.

It is an arithmetic number, because the mean of its divisors is an integer number (9383152128).

Almost surely, 2318017045820 is an apocalyptic number.

318017045820 is a gapful number since it is divisible by the number (30) 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 318017045820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450391302144).

318017045820 is an abundant number, since it is smaller than the sum of its proper divisors (582765558468).

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

318017045820 is a wasteful number, since it uses less digits than its factorization.

318017045820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128299 (or 128297 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 318017045820 in words is "three hundred eighteen billion, seventeen million, forty-five thousand, eight hundred twenty".