Base | Representation |
---|---|
bin | 111001011001… |
… | …0001000010101 |
3 | 2002121201101011 |
4 | 1302302020111 |
5 | 30200332444 |
6 | 2552532221 |
7 | 513521134 |
oct | 162621025 |
9 | 62551334 |
10 | 30089749 |
11 | 15a91968 |
12 | a0b1071 |
13 | 6306ab1 |
14 | 3dd391b |
15 | 2995734 |
hex | 1cb2215 |
30089749 has 4 divisors (see below), whose sum is σ = 31673440. Its totient is φ = 28506060.
The previous prime is 30089737. The next prime is 30089789. The reversal of 30089749 is 94798003.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94798003 = 97 ⋅977299.
It is a cyclic number.
It is not a de Polignac number, because 30089749 - 215 = 30056981 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30089789) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791817 + ... + 791854.
It is an arithmetic number, because the mean of its divisors is an integer number (7918360).
Almost surely, 230089749 is an apocalyptic number.
It is an amenable number.
30089749 is a deficient number, since it is larger than the sum of its proper divisors (1583691).
30089749 is a wasteful number, since it uses less digits than its factorization.
30089749 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1583690.
The product of its (nonzero) digits is 54432, while the sum is 40.
The square root of 30089749 is about 5485.4123819454. The cubic root of 30089749 is about 311.0327987934.
The spelling of 30089749 in words is "thirty million, eighty-nine thousand, seven hundred forty-nine".
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