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30205201 = 132367487
BaseRepresentation
bin111001100111…
…0010100010001
32002211120202011
41303032110101
530213031301
62555222521
7514511545
oct163162421
962746664
1030205201
1116060684
12a147a41
136347500
144023a25
1529b9a51
hex1cce511

30205201 has 12 divisors (see below), whose sum is σ = 32863872. Its totient is φ = 27748656.

The previous prime is 30205199. The next prime is 30205213. The reversal of 30205201 is 10250203.

It is not a de Polignac number, because 30205201 - 21 = 30205199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30205001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61780 + ... + 62266.

It is an arithmetic number, because the mean of its divisors is an integer number (2738656).

Almost surely, 230205201 is an apocalyptic number.

It is an amenable number.

30205201 is a deficient number, since it is larger than the sum of its proper divisors (2658671).

30205201 is a wasteful number, since it uses less digits than its factorization.

30205201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 30205201 is about 5495.9258546673. The cubic root of 30205201 is about 311.4300938900.

Adding to 30205201 its reverse (10250203), we get a palindrome (40455404).

The spelling of 30205201 in words is "thirty million, two hundred five thousand, two hundred one".

Divisors: 1 13 169 367 487 4771 6331 62023 82303 178729 2323477 30205201