Base | Representation |
---|---|
bin | 101000000011100… |
… | …011001010111011 |
3 | 1201211112002221110 |
4 | 220003203022323 |
5 | 2334014103011 |
6 | 150403411403 |
7 | 22440032310 |
oct | 5003431273 |
9 | 1654462843 |
10 | 672019131 |
11 | 315378a13 |
12 | 169083b63 |
13 | a92c3474 |
14 | 65372d07 |
15 | 3dee6ba6 |
hex | 280e32bb |
672019131 has 8 divisors (see below), whose sum is σ = 1024029184. Its totient is φ = 384010920.
The previous prime is 672019111. The next prime is 672019177. The reversal of 672019131 is 131910276.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 672019131 - 25 = 672019099 is a prime.
It is a super-4 number, since 4×6720191314 (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (672019111) 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, 16000435 + ... + 16000476.
It is an arithmetic number, because the mean of its divisors is an integer number (128003648).
Almost surely, 2672019131 is an apocalyptic number.
672019131 is a deficient number, since it is larger than the sum of its proper divisors (352010053).
672019131 is a wasteful number, since it uses less digits than its factorization.
672019131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 32000921.
The product of its (nonzero) digits is 2268, while the sum is 30.
The square root of 672019131 is about 25923.3317881788. The cubic root of 672019131 is about 875.9121398611.
The spelling of 672019131 in words is "six hundred seventy-two million, nineteen thousand, one hundred thirty-one".
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