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71189248 = 281321391
BaseRepresentation
bin1000011111001…
…00001100000000
311221221210021211
410033210030000
5121211023443
611021455504
71523045554
oct417441400
9157853254
1071189248
1137203599
121ba11594
1311996c20
149651864
1563b319d
hex43e4300

71189248 has 36 divisors (see below), whose sum is σ = 153038368. Its totient is φ = 32855040.

The previous prime is 71189233. The next prime is 71189263. The reversal of 71189248 is 84298117.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71189233) and next prime (71189263).

It is a self number, because there is not a number n which added to its sum of digits gives 71189248.

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, 7368 + ... + 14023.

Almost surely, 271189248 is an apocalyptic number.

It is an amenable number.

71189248 is an abundant number, since it is smaller than the sum of its proper divisors (81849120).

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

71189248 is a wasteful number, since it uses less digits than its factorization.

71189248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21420 (or 21406 counting only the distinct ones).

The product of its digits is 32256, while the sum is 40.

The square root of 71189248 is about 8437.3721027344. The cubic root of 71189248 is about 414.4493553415.

The spelling of 71189248 in words is "seventy-one million, one hundred eighty-nine thousand, two hundred forty-eight".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 128 208 256 416 832 1664 3328 21391 42782 85564 171128 278083 342256 556166 684512 1112332 1369024 2224664 2738048 4449328 5476096 8898656 17797312 35594624 71189248