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30214389 = 3171931181
BaseRepresentation
bin111001101000…
…0100011110101
32002212001100110
41303100203311
530213330024
62555333233
7514550412
oct163204365
962761313
1030214389
1116067577
12a151219
13634b74a
144027109
1529bc629
hex1cd08f5

30214389 has 16 divisors (see below), whose sum is σ = 44902080. Its totient is φ = 17959680.

The previous prime is 30214363. The next prime is 30214397. The reversal of 30214389 is 98341203.

It is not a de Polignac number, because 30214389 - 28 = 30214133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30214319) 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 15 ways as a sum of consecutive naturals, for example, 14622 + ... + 16559.

It is an arithmetic number, because the mean of its divisors is an integer number (2806380).

Almost surely, 230214389 is an apocalyptic number.

It is an amenable number.

30214389 is a deficient number, since it is larger than the sum of its proper divisors (14687691).

30214389 is a wasteful number, since it uses less digits than its factorization.

30214389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31220.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30214389 is about 5496.7616830276. The cubic root of 30214389 is about 311.4616682494.

It can be divided in two parts, 30214 and 389, that added together give a palindrome (30603).

The spelling of 30214389 in words is "thirty million, two hundred fourteen thousand, three hundred eighty-nine".

Divisors: 1 3 17 19 51 57 323 969 31181 93543 530077 592439 1590231 1777317 10071463 30214389