Base | Representation |
---|---|
bin | 11110011110101111000101 |
3 | 120000221111211 |
4 | 132132233011 |
5 | 4021141323 |
6 | 443131421 |
7 | 124626040 |
oct | 36365705 |
9 | 16027454 |
10 | 7990213 |
11 | 4568190 |
12 | 2813b71 |
13 | 1869b4a |
14 | 10bdc57 |
15 | a7c70d |
hex | 79ebc5 |
7990213 has 8 divisors (see below), whose sum is σ = 9961920. Its totient is φ = 6226080.
The previous prime is 7990183. The next prime is 7990231. The reversal of 7990213 is 3120997.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 7990213 - 213 = 7982021 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7990273) 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, 51808 + ... + 51961.
It is an arithmetic number, because the mean of its divisors is an integer number (1245240).
Almost surely, 27990213 is an apocalyptic number.
It is an amenable number.
7990213 is a deficient number, since it is larger than the sum of its proper divisors (1971707).
7990213 is a wasteful number, since it uses less digits than its factorization.
7990213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 103787.
The product of its (nonzero) digits is 3402, while the sum is 31.
The square root of 7990213 is about 2826.6964817610. The cubic root of 7990213 is about 199.9184083852.
The spelling of 7990213 in words is "seven million, nine hundred ninety thousand, two hundred thirteen".
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