Base | Representation |
---|---|
bin | 111011000110… |
… | …1011101111001 |
3 | 2011022100202101 |
4 | 1312031131321 |
5 | 30413110103 |
6 | 3024103401 |
7 | 524252320 |
oct | 166153571 |
9 | 64270671 |
10 | 30988153 |
11 | 16545949 |
12 | a464b61 |
13 | 655c9b1 |
14 | 41890b7 |
15 | 2ac1a1d |
hex | 1d8d779 |
30988153 has 16 divisors (see below), whose sum is σ = 38234880. Its totient is φ = 24526656.
The previous prime is 30988151. The next prime is 30988159. The reversal of 30988153 is 35188903.
It is not a de Polignac number, because 30988153 - 21 = 30988151 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30988151) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1351 + ... + 7987.
It is an arithmetic number, because the mean of its divisors is an integer number (2389680).
Almost surely, 230988153 is an apocalyptic number.
It is an amenable number.
30988153 is a deficient number, since it is larger than the sum of its proper divisors (7246727).
30988153 is a wasteful number, since it uses less digits than its factorization.
30988153 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6696.
The product of its (nonzero) digits is 25920, while the sum is 37.
The square root of 30988153 is about 5566.7003691595. The cubic root of 30988153 is about 314.0980430043.
The spelling of 30988153 in words is "thirty million, nine hundred eighty-eight thousand, one hundred fifty-three".
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