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30132517 = 171772501
BaseRepresentation
bin111001011110…
…0100100100101
32002200220001011
41302330210211
530203220032
62553502221
7514056622
oct162744445
962626034
1030132517
1116011008
12a111971
1363203bc
144005349
1529a3247
hex1cbc925

30132517 has 4 divisors (see below), whose sum is σ = 31905036. Its totient is φ = 28360000.

The previous prime is 30132497. The next prime is 30132577. The reversal of 30132517 is 71523103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71523103 = 671067509.

It can be written as a sum of positive squares in 2 ways, for example, as 16597476 + 13535041 = 4074^2 + 3679^2 .

It is a cyclic number.

It is not a de Polignac number, because 30132517 - 215 = 30099749 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 (30132577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886234 + ... + 886267.

It is an arithmetic number, because the mean of its divisors is an integer number (7976259).

Almost surely, 230132517 is an apocalyptic number.

It is an amenable number.

30132517 is a deficient number, since it is larger than the sum of its proper divisors (1772519).

30132517 is a wasteful number, since it uses less digits than its factorization.

30132517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772518.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 30132517 is about 5489.3093372482. The cubic root of 30132517 is about 311.1800909640.

The spelling of 30132517 in words is "thirty million, one hundred thirty-two thousand, five hundred seventeen".

Divisors: 1 17 1772501 30132517