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87909327 = 3311347853
BaseRepresentation
bin1010011110101…
…10001111001111
320010102020221000
411033112033033
5140001044302
612420111343
72115134262
oct517261717
9203366830
1087909327
1145693640
1225535553
131529c46c
14b964cd9
157ab731c
hex53d63cf

87909327 has 32 divisors (see below), whose sum is σ = 142652160. Its totient is φ = 53062560.

The previous prime is 87909319. The next prime is 87909337. The reversal of 87909327 is 72390978.

It is not a de Polignac number, because 87909327 - 23 = 87909319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87909307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102633 + ... + 103485.

It is an arithmetic number, because the mean of its divisors is an integer number (4457880).

Almost surely, 287909327 is an apocalyptic number.

87909327 is a deficient number, since it is larger than the sum of its proper divisors (54742833).

87909327 is a wasteful number, since it uses less digits than its factorization.

87909327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1214 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 87909327 is about 9375.9973869450. The cubic root of 87909327 is about 444.6431967150.

The spelling of 87909327 in words is "eighty-seven million, nine hundred nine thousand, three hundred twenty-seven".

Divisors: 1 3 9 11 27 33 99 297 347 853 1041 2559 3123 3817 7677 9369 9383 11451 23031 28149 34353 84447 103059 253341 295991 887973 2663919 3255901 7991757 9767703 29303109 87909327