Base | Representation |
---|---|
bin | 100100101001111… |
… | …1110110101000000 |
3 | 10011201102012022000 |
4 | 1021103332311000 |
5 | 10004333143343 |
6 | 322014344000 |
7 | 42323420334 |
oct | 11123766500 |
9 | 3151365260 |
10 | 1229974848 |
11 | 58131a343 |
12 | 2a3abb000 |
13 | 167a8ab8b |
14 | b94d37c4 |
15 | 72eabed3 |
hex | 494fed40 |
1229974848 has 112 divisors (see below), whose sum is σ = 3732702720. Its totient is φ = 396748800.
The previous prime is 1229974847. The next prime is 1229974859. The reversal of 1229974848 is 8484799221.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a junction number, because it is equal to n+sod(n) for n = 1229974794 and 1229974803.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1229974843) 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, 42088 + ... + 65048.
Almost surely, 21229974848 is an apocalyptic number.
1229974848 is a gapful number since it is divisible by the number (18) 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 1229974848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1866351360).
1229974848 is an abundant number, since it is smaller than the sum of its proper divisors (2502727872).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1229974848 is a wasteful number, since it uses less digits than its factorization.
1229974848 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23013 (or 22997 counting only the distinct ones).
The product of its digits is 2322432, while the sum is 54.
The square root of 1229974848 is about 35070.9972484388. The cubic root of 1229974848 is about 1071.4339664185.
The spelling of 1229974848 in words is "one billion, two hundred twenty-nine million, nine hundred seventy-four thousand, eight hundred forty-eight".
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