Base | Representation |
---|---|
bin | 111010101111… |
… | …1111110001100 |
3 | 2010221220010120 |
4 | 1311133332030 |
5 | 30341124204 |
6 | 3020104540 |
7 | 522545115 |
oct | 165377614 |
9 | 63856116 |
10 | 30801804 |
11 | 16428940 |
12 | a395150 |
13 | 64c5c27 |
14 | 413b20c |
15 | 2a866d9 |
hex | 1d5ff8c |
30801804 has 24 divisors (see below), whose sum is σ = 78404928. Its totient is φ = 9333840.
The previous prime is 30801791. The next prime is 30801811. The reversal of 30801804 is 40810803.
It is a super-2 number, since 2×308018042 = 1897502259308832, which contains 22 as substring.
30801804 is a modest number, since divided by 1804 gives 308 as remainder.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116542 + ... + 116805.
It is an arithmetic number, because the mean of its divisors is an integer number (3266872).
Almost surely, 230801804 is an apocalyptic number.
It is an amenable number.
30801804 is an abundant number, since it is smaller than the sum of its proper divisors (47603124).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30801804 is a wasteful number, since it uses less digits than its factorization.
30801804 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 233365 (or 233363 counting only the distinct ones).
The product of its (nonzero) digits is 768, while the sum is 24.
The square root of 30801804 is about 5549.9372969431. The cubic root of 30801804 is about 313.4671612823.
It can be divided in two parts, 3080 and 1804, that added together give a palindrome (4884).
The spelling of 30801804 in words is "thirty million, eight hundred one thousand, eight hundred four".
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