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30130154 = 217886181
BaseRepresentation
bin111001011101…
…1111111101010
32002200202210122
41302323333222
530203131104
62553443242
7514050005
oct162737752
962622718
1030130154
111600a25a
12a110522
13631c2c2
14400453c
1529a26be
hex1cbbfea

30130154 has 8 divisors (see below), whose sum is σ = 47853828. Its totient is φ = 14178880.

The previous prime is 30130151. The next prime is 30130183. The reversal of 30130154 is 45103103.

It can be written as a sum of positive squares in 2 ways, for example, as 27804529 + 2325625 = 5273^2 + 1525^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (30130151) 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, 443057 + ... + 443124.

Almost surely, 230130154 is an apocalyptic number.

30130154 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30130154 is a deficient number, since it is larger than the sum of its proper divisors (17723674).

30130154 is a wasteful number, since it uses less digits than its factorization.

30130154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886200.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30130154 is about 5489.0940964789. The cubic root of 30130154 is about 311.1719564762.

Adding to 30130154 its reverse (45103103), we get a palindrome (75233257).

The spelling of 30130154 in words is "thirty million, one hundred thirty thousand, one hundred fifty-four".

Divisors: 1 2 17 34 886181 1772362 15065077 30130154