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87975885 = 355865059
BaseRepresentation
bin1010011111001…
…10011111001101
320010112122020010
411033212133031
5140010212020
612421343433
72115532314
oct517463715
9203478203
1087975885
1145729648
1225567b79
13152c384a
14b98127b
157acbde0
hex53e67cd

87975885 has 8 divisors (see below), whose sum is σ = 140761440. Its totient is φ = 46920464.

The previous prime is 87975883. The next prime is 87975917. The reversal of 87975885 is 58857978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87975885 - 21 = 87975883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87975883) 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 7 ways as a sum of consecutive naturals, for example, 2932515 + ... + 2932544.

It is an arithmetic number, because the mean of its divisors is an integer number (17595180).

Almost surely, 287975885 is an apocalyptic number.

It is an amenable number.

87975885 is a deficient number, since it is larger than the sum of its proper divisors (52785555).

87975885 is a wasteful number, since it uses less digits than its factorization.

87975885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5865067.

The product of its digits is 5644800, while the sum is 57.

The square root of 87975885 is about 9379.5460977597. The cubic root of 87975885 is about 444.7553846445.

The spelling of 87975885 in words is "eighty-seven million, nine hundred seventy-five thousand, eight hundred eighty-five".

Divisors: 1 3 5 15 5865059 17595177 29325295 87975885