Base | Representation |
---|---|
bin | 1101000111100001… |
… | …00010101110010100 |
3 | 200011210110220100200 |
4 | 12203300202232110 |
5 | 103410322104034 |
6 | 3122450340500 |
7 | 336342142110 |
oct | 64360425624 |
9 | 20153426320 |
10 | 7042378644 |
11 | 2a9426a344 |
12 | 144658a730 |
13 | 883023372 |
14 | 4ab42c740 |
15 | 2b33daa99 |
hex | 1a3c22b94 |
7042378644 has 72 divisors (see below), whose sum is σ = 20466595968. Its totient is φ = 2000047680.
The previous prime is 7042378613. The next prime is 7042378649. The reversal of 7042378644 is 4468732407.
It is a self number, because there is not a number n which added to its sum of digits gives 7042378644.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7042378649) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41587 + ... + 125754.
Almost surely, 27042378644 is an apocalyptic number.
It is an amenable number.
7042378644 is an abundant number, since it is smaller than the sum of its proper divisors (13424217324).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7042378644 is a wasteful number, since it uses less digits than its factorization.
7042378644 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 167525 (or 167520 counting only the distinct ones).
The product of its (nonzero) digits is 903168, while the sum is 45.
The square root of 7042378644 is about 83918.8813319148. The cubic root of 7042378644 is about 1916.7837723466.
The spelling of 7042378644 in words is "seven billion, forty-two million, three hundred seventy-eight thousand, six hundred forty-four".
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