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71319552 = 21431451
BaseRepresentation
bin1000100000001…
…00000000000000
311222012102000220
410100010000000
5121224211202
611024343040
71524130503
oct420040000
9158172026
1071319552
1137292487
121ba74a80
1311a11325
14968713a
1563dbabc
hex4404000

71319552 has 60 divisors (see below), whose sum is σ = 190310736. Its totient is φ = 23756800.

The previous prime is 71319511. The next prime is 71319581. The reversal of 71319552 is 25591317.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48427 + ... + 49877.

Almost surely, 271319552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71319552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95155368).

71319552 is an abundant number, since it is smaller than the sum of its proper divisors (118991184).

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

71319552 is an equidigital number, since it uses as much as digits as its factorization.

71319552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482 (or 1456 counting only the distinct ones).

The product of its digits is 9450, while the sum is 33.

The square root of 71319552 is about 8445.0904080418. The cubic root of 71319552 is about 414.7020690312.

The spelling of 71319552 in words is "seventy-one million, three hundred nineteen thousand, five hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 512 768 1024 1451 1536 2048 2902 3072 4096 4353 5804 6144 8192 8706 11608 12288 16384 17412 23216 24576 34824 46432 49152 69648 92864 139296 185728 278592 371456 557184 742912 1114368 1485824 2228736 2971648 4457472 5943296 8914944 11886592 17829888 23773184 35659776 71319552