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72085086 = 2333473847
BaseRepresentation
bin1000100101111…
…10111001011110
312000122022011000
410102332321132
5121423210321
611053011130
71533466413
oct422767136
9160568130
1072085086
1137765657
1220183aa6
1311c1b8c8
14980610a
1564dd826
hex44bee5e

72085086 has 32 divisors (see below), whose sum is σ = 160692480. Its totient is φ = 23952888.

The previous prime is 72085081. The next prime is 72085087. The reversal of 72085086 is 68058027.

It is a self number, because there is not a number n which added to its sum of digits gives 72085086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72085081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16815 + ... + 20661.

It is an arithmetic number, because the mean of its divisors is an integer number (5021640).

Almost surely, 272085086 is an apocalyptic number.

72085086 is an abundant number, since it is smaller than the sum of its proper divisors (88607394).

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

72085086 is a wasteful number, since it uses less digits than its factorization.

72085086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205 (or 4199 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 72085086 is about 8490.2936344982. The cubic root of 72085086 is about 416.1805760365.

The spelling of 72085086 in words is "seventy-two million, eighty-five thousand, eighty-six".

Divisors: 1 2 3 6 9 18 27 54 347 694 1041 2082 3123 3847 6246 7694 9369 11541 18738 23082 34623 69246 103869 207738 1334909 2669818 4004727 8009454 12014181 24028362 36042543 72085086