| Base | Representation |
|---|---|
| bin | 1110110000010100… |
| … | …00001010101000000 |
| 3 | 202110001122111212200 |
| 4 | 13120022001111000 |
| 5 | 112210344112312 |
| 6 | 3350012353200 |
| 7 | 400205256660 |
| oct | 73012012500 |
| 9 | 22401574780 |
| 10 | 7921472832 |
| 11 | 33a5512869 |
| 12 | 1650a75800 |
| 13 | 9931aa240 |
| 14 | 5520a61a0 |
| 15 | 3156880dc |
| hex | 1d8281540 |
7921472832 has 336 divisors, whose sum is σ = 28313725440. Its totient is φ = 2061656064.
The previous prime is 7921472831. The next prime is 7921472851. The reversal of 7921472832 is 2382741297.
It is a tau number, because it is divible by the number of its divisors (336).
It is a super-2 number, since 2×79214728322 (a number of 21 digits) contains 22 as substring.
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7921472831) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4139908 + ... + 4141820.
It is an arithmetic number, because the mean of its divisors is an integer number (84267040).
Almost surely, 27921472832 is an apocalyptic number.
7921472832 is a gapful number since it is divisible by the number (72) 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 7921472832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14156862720).
7921472832 is an abundant number, since it is smaller than the sum of its proper divisors (20392252608).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7921472832 is a wasteful number, since it uses less digits than its factorization.
7921472832 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2030 (or 2017 counting only the distinct ones).
The product of its digits is 338688, while the sum is 45.
The square root of 7921472832 is about 89002.6563199099. The cubic root of 7921472832 is about 1993.4345402865.
The spelling of 7921472832 in words is "seven billion, nine hundred twenty-one million, four hundred seventy-two thousand, eight hundred thirty-two".
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