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288388130 = 25160118013
BaseRepresentation
bin10001001100000…
…111010000100010
3202002122122010212
4101030013100202
51042311410010
644341054122
710101154502
oct2114072042
9662578125
10288388130
111388732a8
12806b7342
1347993684
142a42da02
151a4b8505
hex11307422

288388130 has 16 divisors (see below), whose sum is σ = 519451704. Its totient is φ = 115276800.

The previous prime is 288388117. The next prime is 288388141. The reversal of 288388130 is 31883882.

It can be written as a sum of positive squares in 4 ways, for example, as 280864081 + 7524049 = 16759^2 + 2743^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7004 + ... + 25016.

Almost surely, 2288388130 is an apocalyptic number.

288388130 is a deficient number, since it is larger than the sum of its proper divisors (231063574).

288388130 is a wasteful number, since it uses less digits than its factorization.

288388130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19621.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 288388130 is about 16981.9942880688. The cubic root of 288388130 is about 660.6819779590.

The spelling of 288388130 in words is "two hundred eighty-eight million, three hundred eighty-eight thousand, one hundred thirty".

Divisors: 1 2 5 10 1601 3202 8005 16010 18013 36026 90065 180130 28838813 57677626 144194065 288388130