Base | Representation |
---|---|
bin | 1110110010100101… |
… | …00110101000100000 |
3 | 202111101110012020121 |
4 | 13121102212220200 |
5 | 112230232000000 |
6 | 3351532250024 |
7 | 400526064526 |
oct | 73122465040 |
9 | 22441405217 |
10 | 7940500000 |
11 | 34052291a4 |
12 | 1657310914 |
13 | 99710c914 |
14 | 55481a316 |
15 | 317195b1a |
hex | 1d94a6a20 |
7940500000 has 84 divisors (see below), whose sum is σ = 19542054546. Its totient is φ = 3176000000.
The previous prime is 7940499977. The next prime is 7940500019. The reversal of 7940500000 is 50497.
It can be written as a sum of positive squares in 7 ways, for example, as 2190614416 + 5749885584 = 46804^2 + 75828^2 .
It is a sliding number, since 7940500000 = 128000000 + 7812500000 and 1/128000000 + 1/7812500000 = 0.000000007940500000.
It is a Harshad number since it is a multiple of its sum of digits (25).
It is an unprimeable number.
It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 492060 + ... + 507940.
Almost surely, 27940500000 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 7940500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9771027273).
7940500000 is an abundant number, since it is smaller than the sum of its proper divisors (11601554546).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7940500000 is an frugal number, since it uses more digits than its factorization.
7940500000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15921 (or 15888 counting only the distinct ones).
The product of its (nonzero) digits is 1260, while the sum is 25.
The square root of 7940500000 is about 89109.4832214843. The cubic root of 7940500000 is about 1995.0293230866.
Adding to 7940500000 its reverse (50497), we get a palindrome (7940550497).
The spelling of 7940500000 in words is "seven billion, nine hundred forty million, five hundred thousand".
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