| Base | Representation |
|---|---|
| bin | 1110110111011100… |
| … | …0010011000000000 |
| 3 | 101022010001220021010 |
| 4 | 3231313002120000 |
| 5 | 31133100042330 |
| 6 | 1455553000520 |
| 7 | 200614530333 |
| oct | 35567023000 |
| 9 | 11263056233 |
| 10 | 3990627840 |
| 11 | 1768672841 |
| 12 | 934553140 |
| 13 | 4b79bc864 |
| 14 | 29bdd461a |
| 15 | 1855233b0 |
| hex | eddc2600 |
3990627840 has 160 divisors (see below), whose sum is σ = 12975240960. Its totient is φ = 1046011904.
The previous prime is 3990627827. The next prime is 3990627841. The reversal of 3990627840 is 487260993.
It is a tau number, because it is divible by the number of its divisors (160).
It is a super-2 number, since 2×39906278402 = 31850221114766131200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (48).
It is a self number, because there is not a number n which added to its sum of digits gives 3990627840.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3990627841) 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, 448717 + ... + 457523.
It is an arithmetic number, because the mean of its divisors is an integer number (81095256).
Almost surely, 23990627840 is an apocalyptic number.
3990627840 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 3990627840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6487620480).
3990627840 is an abundant number, since it is smaller than the sum of its proper divisors (8984613120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3990627840 is an equidigital number, since it uses as much as digits as its factorization.
3990627840 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8892 (or 8876 counting only the distinct ones).
The product of its (nonzero) digits is 653184, while the sum is 48.
The square root of 3990627840 is about 63171.4163209913. The cubic root of 3990627840 is about 1586.1603010331.
The spelling of 3990627840 in words is "three billion, nine hundred ninety million, six hundred twenty-seven thousand, eight hundred forty".
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