| Base | Representation |
|---|---|
| bin | 111101011101001… |
| … | …110100111011100 |
| 3 | 2122212010220012000 |
| 4 | 331131032213130 |
| 5 | 4102423302340 |
| 6 | 250151242300 |
| 7 | 34356653313 |
| oct | 7535164734 |
| 9 | 2585126160 |
| 10 | 1031072220 |
| 11 | 48a016902 |
| 12 | 249379390 |
| 13 | 1357c9209 |
| 14 | 9ad1927a |
| 15 | 607bcd30 |
| hex | 3d74e9dc |
1031072220 has 96 divisors (see below), whose sum is σ = 3226003200. Its totient is φ = 273390912.
The previous prime is 1031072201. The next prime is 1031072239. The reversal of 1031072220 is 222701301.
It is an interprime number because it is at equal distance from previous prime (1031072201) and next prime (1031072239).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 1031072193 and 1031072202.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91327 + ... + 101993.
It is an arithmetic number, because the mean of its divisors is an integer number (33604200).
Almost surely, 21031072220 is an apocalyptic number.
1031072220 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 1031072220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1613001600).
1031072220 is an abundant number, since it is smaller than the sum of its proper divisors (2194930980).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1031072220 is a wasteful number, since it uses less digits than its factorization.
1031072220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10864 (or 10856 counting only the distinct ones).
The product of its (nonzero) digits is 168, while the sum is 18.
The square root of 1031072220 is about 32110.3132965096. The cubic root of 1031072220 is about 1010.2519451200.
Adding to 1031072220 its reverse (222701301), we get a palindrome (1253773521).
The spelling of 1031072220 in words is "one billion, thirty-one million, seventy-two thousand, two hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •