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87897825 = 33521071217
BaseRepresentation
bin1010011110100…
…11011011100001
320010101200011000
411033103123201
5140000212300
612415542213
72115055611
oct517233341
9203350130
1087897825
1145685a34
122552a969
1315297162
14b960a41
157ab3c00
hex53d36e1

87897825 has 48 divisors (see below), whose sum is σ = 163114560. Its totient is φ = 46402560.

The previous prime is 87897793. The next prime is 87897883. The reversal of 87897825 is 52879878.

It is not a de Polignac number, because 87897825 - 25 = 87897793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71617 + ... + 72833.

It is an arithmetic number, because the mean of its divisors is an integer number (3398220).

Almost surely, 287897825 is an apocalyptic number.

It is an amenable number.

87897825 is a deficient number, since it is larger than the sum of its proper divisors (75216735).

87897825 is a wasteful number, since it uses less digits than its factorization.

87897825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343 (or 1332 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The square root of 87897825 is about 9375.3839921360. The cubic root of 87897825 is about 444.6238035922.

The spelling of 87897825 in words is "eighty-seven million, eight hundred ninety-seven thousand, eight hundred twenty-five".

Divisors: 1 3 5 9 15 25 27 45 75 107 135 225 321 535 675 963 1217 1605 2675 2889 3651 4815 6085 8025 10953 14445 18255 24075 30425 32859 54765 72225 91275 130219 164295 273825 390657 651095 821475 1171971 1953285 3255475 3515913 5859855 9766425 17579565 29299275 87897825