87311378 has 32 divisors (see below), whose sum is σ = 164118528. Its totient is φ = 33843600.

The previous prime is 87311377. The next prime is 87311423.

87311378 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (87311377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31151 + ... + 33837.

It is an arithmetic number, because the mean of its divisors is an integer number (5128704).

Almost surely, 2^87311378 is an apocalyptic number.

87311378 is a deficient number, since it is larger than the sum of its proper divisors (76807150).

87311378 is a wasteful number, since it uses less digits than its factorization.

87311378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918.

The product of its digits is 28224, while the sum is 38.

The square root of 87311378 is about 9344.0557575391. The cubic root of 87311378 is about 443.6327652216.

The spelling of 87311378 in words is "eighty-seven million, three hundred eleven thousand, three hundred seventy-eight".