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30234423 = 310078141
BaseRepresentation
bin111001101010…
…1011100110111
32002220001211110
41303111130313
530220000143
63000010103
7514663002
oct163253467
962801743
1030234423
111608062a
12a160933
1363578bb
144030539
1529c3533
hex1cd5737

30234423 has 4 divisors (see below), whose sum is σ = 40312568. Its totient is φ = 20156280.

The previous prime is 30234389. The next prime is 30234437. The reversal of 30234423 is 32443203.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30234423 - 212 = 30230327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30234423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30234023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5039068 + ... + 5039073.

It is an arithmetic number, because the mean of its divisors is an integer number (10078142).

Almost surely, 230234423 is an apocalyptic number.

30234423 is a deficient number, since it is larger than the sum of its proper divisors (10078145).

30234423 is a wasteful number, since it uses less digits than its factorization.

30234423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10078144.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 30234423 is about 5498.5837267427. The cubic root of 30234423 is about 311.5304924603.

Adding to 30234423 its reverse (32443203), we get a palindrome (62677626).

The spelling of 30234423 in words is "thirty million, two hundred thirty-four thousand, four hundred twenty-three".

Divisors: 1 3 10078141 30234423