87117750 has 96 divisors (see below), whose sum is σ = 243360000. Its totient is φ = 22464000.

The previous prime is 87117749. The next prime is 87117757. The reversal of 87117750 is 5771178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87117757) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69126 + ... + 70374.

It is an arithmetic number, because the mean of its divisors is an integer number (2535000).

Almost surely, 2^87117750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87117750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121680000).

87117750 is an abundant number, since it is smaller than the sum of its proper divisors (156242250).

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

87117750 is a wasteful number, since it uses less digits than its factorization.

87117750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 36.

The square root of 87117750 is about 9333.6889813192. The cubic root of 87117750 is about 443.3045785082.

It can be divided in two parts, 8711 and 7750, that added together give a palindrome (16461).

The spelling of 87117750 in words is "eighty-seven million, one hundred seventeen thousand, seven hundred fifty".