Base | Representation |
---|---|
bin | 111001111011… |
… | …0100010101001 |
3 | 2010010221202101 |
4 | 1303312202221 |
5 | 30233314321 |
6 | 3002533401 |
7 | 516066106 |
oct | 163664251 |
9 | 63127671 |
10 | 30369961 |
11 | 16163446 |
12 | a207261 |
13 | 63a44bb |
14 | 4067aad |
15 | 29ed791 |
hex | 1cf68a9 |
30369961 has 8 divisors (see below), whose sum is σ = 32446880. Its totient is φ = 28340928.
The previous prime is 30369953. The next prime is 30369979. The reversal of 30369961 is 16996303.
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 30369961 - 23 = 30369953 is a prime.
It is a super-2 number, since 2×303699612 = 1844669062283042, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 30369961.
It is not an unprimeable number, because it can be changed into a prime (30369991) 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, 10656 + ... + 13201.
It is an arithmetic number, because the mean of its divisors is an integer number (4055860).
Almost surely, 230369961 is an apocalyptic number.
It is an amenable number.
30369961 is a deficient number, since it is larger than the sum of its proper divisors (2076919).
30369961 is a wasteful number, since it uses less digits than its factorization.
30369961 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23943.
The product of its (nonzero) digits is 26244, while the sum is 37.
The square root of 30369961 is about 5510.8947549377. The cubic root of 30369961 is about 311.9953189359.
The spelling of 30369961 in words is "thirty million, three hundred sixty-nine thousand, nine hundred sixty-one".
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