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87969366 = 2324887187
BaseRepresentation
bin1010011111001…
…00111001010110
320010112022021200
411033210321112
5140010004431
612421253330
72115504312
oct517447126
9203468250
1087969366
1145724761
1225564246
13152c08a4
14b97cb42
157ac9ee6
hex53e4e56

87969366 has 12 divisors (see below), whose sum is σ = 190600332. Its totient is φ = 29323116.

The previous prime is 87969361. The next prime is 87969367. The reversal of 87969366 is 66396978.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87969361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2443576 + ... + 2443611.

It is an arithmetic number, because the mean of its divisors is an integer number (15883361).

Almost surely, 287969366 is an apocalyptic number.

87969366 is an abundant number, since it is smaller than the sum of its proper divisors (102630966).

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

87969366 is a wasteful number, since it uses less digits than its factorization.

87969366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4887195 (or 4887192 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 87969366 is about 9379.1985798361. The cubic root of 87969366 is about 444.7443989372.

The spelling of 87969366 in words is "eighty-seven million, nine hundred sixty-nine thousand, three hundred sixty-six".

Divisors: 1 2 3 6 9 18 4887187 9774374 14661561 29323122 43984683 87969366