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71358872 = 2313686143
BaseRepresentation
bin1000100000011…
…01100110011000
311222021101222012
410100031212120
5121231440442
611025245052
71524353234
oct420154630
9158241865
1071358872
1137309a82
121ba93788
1311a261b0
1496975c4
1563e8582
hex440d998

71358872 has 16 divisors (see below), whose sum is σ = 144090240. Its totient is φ = 32934816.

The previous prime is 71358871. The next prime is 71358893. The reversal of 71358872 is 27885317.

It is a super-2 number, since 2×713588722 = 10184177226224768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71358871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342968 + ... + 343175.

It is an arithmetic number, because the mean of its divisors is an integer number (9005640).

Almost surely, 271358872 is an apocalyptic number.

It is an amenable number.

71358872 is an abundant number, since it is smaller than the sum of its proper divisors (72731368).

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

71358872 is a wasteful number, since it uses less digits than its factorization.

71358872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686162 (or 686158 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 71358872 is about 8447.4180670782. The cubic root of 71358872 is about 414.7782664141.

The spelling of 71358872 in words is "seventy-one million, three hundred fifty-eight thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 13 26 52 104 686143 1372286 2744572 5489144 8919859 17839718 35679436 71358872