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30540589 = 268311383
BaseRepresentation
bin111010010000…
…0001100101101
32010110121210221
41310200030231
530304244324
63010331341
7520406422
oct164401455
963417727
1030540589
111626a662
12a289b51
136434071
1440add49
152a340e4
hex1d2032d

30540589 has 4 divisors (see below), whose sum is σ = 30554656. Its totient is φ = 30526524.

The previous prime is 30540569. The next prime is 30540593. The reversal of 30540589 is 98504503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98504503 = 293396707.

It is a cyclic number.

It is not a de Polignac number, because 30540589 - 25 = 30540557 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 (30540529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3009 + ... + 8374.

It is an arithmetic number, because the mean of its divisors is an integer number (7638664).

Almost surely, 230540589 is an apocalyptic number.

It is an amenable number.

30540589 is a deficient number, since it is larger than the sum of its proper divisors (14067).

30540589 is a wasteful number, since it uses less digits than its factorization.

30540589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14066.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 30540589 is about 5526.3540422235. The cubic root of 30540589 is about 312.5785240537.

The spelling of 30540589 in words is "thirty million, five hundred forty thousand, five hundred eighty-nine".

Divisors: 1 2683 11383 30540589