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88163689 = 683129083
BaseRepresentation
bin1010100000101…
…00010101101001
320010220011211211
411100110111221
5140032214224
612425353121
72120243665
oct520242551
9203804754
1088163689
1145847759
12256387a1
131535b183
14b9cd8a5
157b17894
hex5414569

88163689 has 4 divisors (see below), whose sum is σ = 88293456. Its totient is φ = 88033924.

The previous prime is 88163687. The next prime is 88163701. The reversal of 88163689 is 98636188.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88163689 - 21 = 88163687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88163687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63859 + ... + 65224.

It is an arithmetic number, because the mean of its divisors is an integer number (22073364).

Almost surely, 288163689 is an apocalyptic number.

It is an amenable number.

88163689 is a deficient number, since it is larger than the sum of its proper divisors (129767).

88163689 is a wasteful number, since it uses less digits than its factorization.

88163689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129766.

The product of its digits is 497664, while the sum is 49.

The square root of 88163689 is about 9389.5521192440. The cubic root of 88163689 is about 445.0716359867.

The spelling of 88163689 in words is "eighty-eight million, one hundred sixty-three thousand, six hundred eighty-nine".

Divisors: 1 683 129083 88163689