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30234642 = 235039107
BaseRepresentation
bin111001101010…
…1100000010010
32002220002010120
41303111200102
530220002032
63000011110
7514663434
oct163254022
962802116
1030234642
1116080809
12a160a96
136357a29
144030654
1529c362c
hex1cd5812

30234642 has 8 divisors (see below), whose sum is σ = 60469296. Its totient is φ = 10078212.

The previous prime is 30234637. The next prime is 30234649. The reversal of 30234642 is 24643203.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

30234642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (30234649) 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, 2519548 + ... + 2519559.

It is an arithmetic number, because the mean of its divisors is an integer number (7558662).

Almost surely, 230234642 is an apocalyptic number.

30234642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30234642 is a wasteful number, since it uses less digits than its factorization.

30234642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039112.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 30234642 is about 5498.6036409256. The cubic root of 30234642 is about 311.5312446384.

Adding to 30234642 its reverse (24643203), we get a palindrome (54877845).

It can be divided in two parts, 30234 and 642, that added together give a triangular number (30876 = T248).

The spelling of 30234642 in words is "thirty million, two hundred thirty-four thousand, six hundred forty-two".

Divisors: 1 2 3 6 5039107 10078214 15117321 30234642