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180139088 = 2437973137
BaseRepresentation
bin10101011110010…
…11010001010000
3110112222000101002
422233023101100
5332103422323
625513001132
74315104563
oct1257132120
9415860332
10180139088
1192758188
12503b31a8
132b42229c
1419cd24da
1510c34828
hexabcb450

180139088 has 40 divisors (see below), whose sum is σ = 362263272. Its totient is φ = 86704128.

The previous prime is 180139087. The next prime is 180139121. The reversal of 180139088 is 880931081.

It can be written as a sum of positive squares in 4 ways, for example, as 122500624 + 57638464 = 11068^2 + 7592^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180139087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55856 + ... + 58992.

Almost surely, 2180139088 is an apocalyptic number.

It is an amenable number.

180139088 is an abundant number, since it is smaller than the sum of its proper divisors (182124184).

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

180139088 is a wasteful number, since it uses less digits than its factorization.

180139088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279 (or 3273 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 180139088 is about 13421.5903677619. The cubic root of 180139088 is about 564.7670096854.

The spelling of 180139088 in words is "one hundred eighty million, one hundred thirty-nine thousand, eighty-eight".

Divisors: 1 2 4 8 16 37 74 97 148 194 296 388 592 776 1552 3137 3589 6274 7178 12548 14356 25096 28712 50192 57424 116069 232138 304289 464276 608578 928552 1217156 1857104 2434312 4868624 11258693 22517386 45034772 90069544 180139088