87775488 has 216 divisors, whose sum is σ = 281238048. Its totient is φ = 27205632.

The previous prime is 87775481. The next prime is 87775511. The reversal of 87775488 is 88457778.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (87775481) 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 23 ways as a sum of consecutive naturals, for example, 1057495 + ... + 1057577.

It is an arithmetic number, because the mean of its divisors is an integer number (1302028).

Almost surely, 2^87775488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87775488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140619024).

87775488 is an abundant number, since it is smaller than the sum of its proper divisors (193462560).

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

87775488 is an equidigital number, since it uses as much as digits as its factorization.

87775488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 105 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 54.

The square root of 87775488 is about 9368.8573476172. The cubic root of 87775488 is about 444.4174306544.

The spelling of 87775488 in words is "eighty-seven million, seven hundred seventy-five thousand, four hundred eighty-eight".