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30035142 = 2321668619
BaseRepresentation
bin111001010010…
…0110011000110
32002111221110200
41302210303012
530142111032
62551431330
7513203004
oct162446306
962457420
1030035142
1115a54935
12a085546
1362b7c97
143dbba74
15298447c
hex1ca4cc6

30035142 has 12 divisors (see below), whose sum is σ = 65076180. Its totient is φ = 10011708.

The previous prime is 30035101. The next prime is 30035149. The reversal of 30035142 is 24153003.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1668619 = 30035142 / (3 + 0 + 0 + 3 + 5 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30035149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 834292 + ... + 834327.

It is an arithmetic number, because the mean of its divisors is an integer number (5423015).

Almost surely, 230035142 is an apocalyptic number.

30035142 is an abundant number, since it is smaller than the sum of its proper divisors (35041038).

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

30035142 is a wasteful number, since it uses less digits than its factorization.

30035142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668627 (or 1668624 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30035142 is about 5480.4326471548. The cubic root of 30035142 is about 310.8445303239.

Adding to 30035142 its reverse (24153003), we get a palindrome (54188145).

The spelling of 30035142 in words is "thirty million, thirty-five thousand, one hundred forty-two".

Divisors: 1 2 3 6 9 18 1668619 3337238 5005857 10011714 15017571 30035142