Base | Representation |
---|---|
bin | 111101011001001… |
… | …111111001010001 |
3 | 2122210011212222211 |
4 | 331121033321101 |
5 | 4102141411011 |
6 | 250113032121 |
7 | 34345046440 |
oct | 7531177121 |
9 | 2583155884 |
10 | 1030028881 |
11 | 489473a42 |
12 | 248b55641 |
13 | 13552235b |
14 | 9ab26d57 |
15 | 60663b21 |
hex | 3d64fe51 |
1030028881 has 8 divisors (see below), whose sum is σ = 1183152960. Its totient is φ = 878399088.
The previous prime is 1030028869. The next prime is 1030028911. The reversal of 1030028881 is 1888200301.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 1030028881 - 29 = 1030028369 is a prime.
It is a super-2 number, since 2×10300288812 = 2121918991388224322, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1030028381) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372091 + ... + 374848.
It is an arithmetic number, because the mean of its divisors is an integer number (147894120).
Almost surely, 21030028881 is an apocalyptic number.
It is an amenable number.
1030028881 is a deficient number, since it is larger than the sum of its proper divisors (153124079).
1030028881 is an equidigital number, since it uses as much as digits as its factorization.
1030028881 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 747143.
The product of its (nonzero) digits is 3072, while the sum is 31.
The square root of 1030028881 is about 32094.0630179477. The cubic root of 1030028881 is about 1009.9110731103.
The spelling of 1030028881 in words is "one billion, thirty million, twenty-eight thousand, eight hundred eighty-one".
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