Base | Representation |
---|---|
bin | 111010111010… |
… | …0000000100111 |
3 | 2011010001201101 |
4 | 1311310000213 |
5 | 30401241004 |
6 | 3021540531 |
7 | 523336315 |
oct | 165640047 |
9 | 64101641 |
10 | 30883879 |
11 | 16484574 |
12 | a414747 |
13 | 65243b0 |
14 | 415d0b5 |
15 | 2aa0ba4 |
hex | 1d74027 |
30883879 has 8 divisors (see below), whose sum is σ = 33481952. Its totient is φ = 28317600.
The previous prime is 30883861. The next prime is 30883889. The reversal of 30883879 is 97838803.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30883879 - 211 = 30881831 is a prime.
It is a super-4 number, since 4×308838794 (a number of 31 digits) contains 4444 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30883889) 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, 5904 + ... + 9829.
It is an arithmetic number, because the mean of its divisors is an integer number (4185244).
Almost surely, 230883879 is an apocalyptic number.
30883879 is a deficient number, since it is larger than the sum of its proper divisors (2598073).
30883879 is a wasteful number, since it uses less digits than its factorization.
30883879 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15897.
The product of its (nonzero) digits is 290304, while the sum is 46.
The square root of 30883879 is about 5557.3266054822. The cubic root of 30883879 is about 313.7453376238.
The spelling of 30883879 in words is "thirty million, eight hundred eighty-three thousand, eight hundred seventy-nine".
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