Base | Representation |
---|---|
bin | 1101000111000100… |
… | …11111010000010101 |
3 | 200011112112201112222 |
4 | 12203202133100111 |
5 | 103403401210141 |
6 | 3122235352125 |
7 | 336265625663 |
oct | 64342372025 |
9 | 20145481488 |
10 | 7038694421 |
11 | 2a92183330 |
12 | 14452b2645 |
13 | 882333455 |
14 | 4aab4dc33 |
15 | 2b2e0e14b |
hex | 1a389f415 |
7038694421 has 8 divisors (see below), whose sum is σ = 7681036800. Its totient is φ = 6396762240.
The previous prime is 7038694409. The next prime is 7038694423. The reversal of 7038694421 is 1244968307.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 7038694421 - 214 = 7038678037 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 (7038694423) 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, 66101 + ... + 135818.
It is an arithmetic number, because the mean of its divisors is an integer number (960129600).
Almost surely, 27038694421 is an apocalyptic number.
It is an amenable number.
7038694421 is a deficient number, since it is larger than the sum of its proper divisors (642342379).
7038694421 is a wasteful number, since it uses less digits than its factorization.
7038694421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 205099.
The product of its (nonzero) digits is 290304, while the sum is 44.
The square root of 7038694421 is about 83896.9273632831. The cubic root of 7038694421 is about 1916.4494586606.
The spelling of 7038694421 in words is "seven billion, thirty-eight million, six hundred ninety-four thousand, four hundred twenty-one".
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