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87869060 = 22513732069
BaseRepresentation
bin1010011110011…
…00011010000100
320010100012200122
411033030122010
5134443302220
612415201112
72114606006
oct517143204
9203305618
1087869060
1145666364
1225516198
1315287036
14b954376
157aaa425
hex53cc684

87869060 has 24 divisors (see below), whose sum is σ = 185877720. Its totient is φ = 34889984.

The previous prime is 87869059. The next prime is 87869063. The reversal of 87869060 is 6096878.

It can be written as a sum of positive squares in 4 ways, for example, as 23580736 + 64288324 = 4856^2 + 8018^2 .

It is not an unprimeable number, because it can be changed into a prime (87869063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13295 + ... + 18774.

It is an arithmetic number, because the mean of its divisors is an integer number (7744905).

Almost surely, 287869060 is an apocalyptic number.

It is an amenable number.

87869060 is an abundant number, since it is smaller than the sum of its proper divisors (98008660).

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

87869060 is a wasteful number, since it uses less digits than its factorization.

87869060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32215 (or 32213 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 87869060 is about 9373.8497961083. The cubic root of 87869060 is about 444.5752965174.

The spelling of 87869060 in words is "eighty-seven million, eight hundred sixty-nine thousand, sixty".

Divisors: 1 2 4 5 10 20 137 274 548 685 1370 2740 32069 64138 128276 160345 320690 641380 4393453 8786906 17573812 21967265 43934530 87869060