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30144160 = 255188401
BaseRepresentation
bin111001011111…
…1011010100000
32002201111000101
41302333122200
530204103120
62554032144
7514135564
oct162773240
962644011
1030144160
1116019832
12a118654
1363257a7
1440096a4
1529a690a
hex1cbf6a0

30144160 has 24 divisors (see below), whose sum is σ = 71215956. Its totient is φ = 12057600.

The previous prime is 30144139. The next prime is 30144173. The reversal of 30144160 is 6144103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26255376 + 3888784 = 5124^2 + 1972^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94041 + ... + 94360.

Almost surely, 230144160 is an apocalyptic number.

It is an amenable number.

30144160 is an abundant number, since it is smaller than the sum of its proper divisors (41071796).

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

30144160 is a wasteful number, since it uses less digits than its factorization.

30144160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188416 (or 188408 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30144160 is about 5490.3697507545. The cubic root of 30144160 is about 311.2201650945.

Adding to 30144160 its reverse (6144103), we get a palindrome (36288263).

The spelling of 30144160 in words is "thirty million, one hundred forty-four thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 188401 376802 753604 942005 1507208 1884010 3014416 3768020 6028832 7536040 15072080 30144160