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30233205 = 3252932293
BaseRepresentation
bin111001101010…
…1001001110101
32002220000011100
41303111021311
530214430310
63000000313
7514656312
oct163251165
962800140
1030233205
111607a722
12a160099
136357192
14402dd09
1529c2ec0
hex1cd5275

30233205 has 24 divisors (see below), whose sum is σ = 52606008. Its totient is φ = 16062336.

The previous prime is 30233197. The next prime is 30233207. The reversal of 30233205 is 50233203.

It can be written as a sum of positive squares in 4 ways, for example, as 6671889 + 23561316 = 2583^2 + 4854^2 .

It is not a de Polignac number, because 30233205 - 23 = 30233197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30233207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12039 + ... + 14331.

It is an arithmetic number, because the mean of its divisors is an integer number (2191917).

Almost surely, 230233205 is an apocalyptic number.

It is an amenable number.

30233205 is a deficient number, since it is larger than the sum of its proper divisors (22372803).

30233205 is a wasteful number, since it uses less digits than its factorization.

30233205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597 (or 2594 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 30233205 is about 5498.4729698344. The cubic root of 30233205 is about 311.5263090473.

Adding to 30233205 its reverse (50233203), we get a palindrome (80466408).

The spelling of 30233205 in words is "thirty million, two hundred thirty-three thousand, two hundred five".

Divisors: 1 3 5 9 15 45 293 879 1465 2293 2637 4395 6879 11465 13185 20637 34395 103185 671849 2015547 3359245 6046641 10077735 30233205