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87383972 = 22131680461
BaseRepresentation
bin1010011010101…
…01111110100100
320002102120021102
411031111332210
5134332241342
612400535232
72110515524
oct515257644
9202376242
1087383972
1145364965
1225321518
13151472c0
14b869684
157a11832
hex5355fa4

87383972 has 12 divisors (see below), whose sum is σ = 164685276. Its totient is φ = 40331040.

The previous prime is 87383971. The next prime is 87383987. The reversal of 87383972 is 27938378.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34035556 + 53348416 = 5834^2 + 7304^2 .

It is not an unprimeable number, because it can be changed into a prime (87383971) 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, 840179 + ... + 840282.

It is an arithmetic number, because the mean of its divisors is an integer number (13723773).

Almost surely, 287383972 is an apocalyptic number.

It is an amenable number.

87383972 is a deficient number, since it is larger than the sum of its proper divisors (77301304).

87383972 is a wasteful number, since it uses less digits than its factorization.

87383972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680478 (or 1680476 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 87383972 is about 9347.9394520932. The cubic root of 87383972 is about 443.7556822125.

The spelling of 87383972 in words is "eighty-seven million, three hundred eighty-three thousand, nine hundred seventy-two".

Divisors: 1 2 4 13 26 52 1680461 3360922 6721844 21845993 43691986 87383972