Base | Representation |
---|---|
bin | 111010011000… |
… | …0101010011001 |
3 | 2010121001022120 |
4 | 1310300222121 |
5 | 30313424100 |
6 | 3012011453 |
7 | 521110140 |
oct | 164605231 |
9 | 63531276 |
10 | 30608025 |
11 | 16306298 |
12 | a300b89 |
13 | 6458976 |
14 | 40ca757 |
15 | 2a490a0 |
hex | 1d30a99 |
30608025 has 48 divisors (see below), whose sum is σ = 58341504. Its totient is φ = 13870080.
The previous prime is 30608023. The next prime is 30608033. The reversal of 30608025 is 52080603.
It is not a de Polignac number, because 30608025 - 21 = 30608023 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 30607986 and 30608004.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30608023) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90657 + ... + 90993.
It is an arithmetic number, because the mean of its divisors is an integer number (1215448).
Almost surely, 230608025 is an apocalyptic number.
30608025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.
It is an amenable number.
30608025 is a deficient number, since it is larger than the sum of its proper divisors (27733479).
30608025 is a wasteful number, since it uses less digits than its factorization.
30608025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 530 (or 525 counting only the distinct ones).
The product of its (nonzero) digits is 1440, while the sum is 24.
The square root of 30608025 is about 5532.4519880429. The cubic root of 30608025 is about 312.8084208383.
Adding to 30608025 its reverse (52080603), we get a palindrome (82688628).
The spelling of 30608025 in words is "thirty million, six hundred eight thousand, twenty-five".
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