Base | Representation |
---|---|
bin | 10000111111010000… |
… | …110011110110011000 |
3 | 1202002021010000201222 |
4 | 100333100303312120 |
5 | 244324224143342 |
6 | 12214021031212 |
7 | 1214014662050 |
oct | 207720636630 |
9 | 52067100658 |
10 | 18241240472 |
11 | 7810782a54 |
12 | 3650b55508 |
13 | 19491c6c20 |
14 | c508a6560 |
15 | 71b65bed2 |
hex | 43f433d98 |
18241240472 has 192 divisors, whose sum is σ = 45880934400. Its totient is φ = 6613021440.
The previous prime is 18241240471. The next prime is 18241240477. The reversal of 18241240472 is 27404214281.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18241240471) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8145929 + ... + 8148167.
It is an arithmetic number, because the mean of its divisors is an integer number (238963200).
Almost surely, 218241240472 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 18241240472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22940467200).
18241240472 is an abundant number, since it is smaller than the sum of its proper divisors (27639693928).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18241240472 is a wasteful number, since it uses less digits than its factorization.
18241240472 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2334 (or 2311 counting only the distinct ones).
The product of its (nonzero) digits is 28672, while the sum is 35.
The spelling of 18241240472 in words is "eighteen billion, two hundred forty-one million, two hundred forty thousand, four hundred seventy-two".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •