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71908048 = 245777789
BaseRepresentation
bin1000100100100…
…11101011010000
312000022022022001
410102103223100
5121402024143
611045123344
71532131312
oct422235320
9160268261
1071908048
1137654643
12200b9554
1311b89154
14979b7b2
1564a614d
hex4493ad0

71908048 has 20 divisors (see below), whose sum is σ = 139581220. Its totient is φ = 35887104.

The previous prime is 71908043. The next prime is 71908069. The reversal of 71908048 is 84080917.

It can be written as a sum of positive squares in 2 ways, for example, as 61591104 + 10316944 = 7848^2 + 3212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71907998 and 71908016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71908043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5338 + ... + 13126.

It is an arithmetic number, because the mean of its divisors is an integer number (6979061).

Almost surely, 271908048 is an apocalyptic number.

It is an amenable number.

71908048 is a deficient number, since it is larger than the sum of its proper divisors (67673172).

71908048 is a wasteful number, since it uses less digits than its factorization.

71908048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8374 (or 8368 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 71908048 is about 8479.8613196207. The cubic root of 71908048 is about 415.8395892873.

The spelling of 71908048 in words is "seventy-one million, nine hundred eight thousand, forty-eight".

Divisors: 1 2 4 8 16 577 1154 2308 4616 7789 9232 15578 31156 62312 124624 4494253 8988506 17977012 35954024 71908048