• 88 can be written using four 4's:

88 has 8 divisors (see below), whose sum is σ = 180. Its totient is φ = 40.

The previous prime is 83. The next prime is 89.

88 is nontrivially palindromic in base 5 and base 10.

88 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It is a tau number, because it is divible by the number of its divisors (8).

88 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

88 is an idoneal number.

88 is a strobogrammatic number because it is the same when read upside-down.

88 is an undulating number in base 5.

88 is a nontrivial repdigit in base 10.

It is a plaindrome in base 6, base 10, base 13, base 15 and base 16.

It is a nialpdrome in base 10, base 11, base 12 and base 14.

It is a zygodrome in base 10.

It is a congruent number.

88 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3 + ... + 13.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90).

88 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

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

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

The sum of its prime factors is 17 (or 13 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 88 is about 9.3808315196. The cubic root of 88 is about 4.4479601811.

The spelling of 88 in words is "eighty-eight", and thus it is an aban number, an oban number, and an uban number.

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