87378078 has 8 divisors (see below), whose sum is σ = 174756168. Its totient is φ = 29126024.

The previous prime is 87378059. The next prime is 87378089. The reversal of 87378078 is 87087378.

It is a sphenic number, since it is the product of 3 distinct primes.

87378078 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7281501 + ... + 7281512.

It is an arithmetic number, because the mean of its divisors is an integer number (21844521).

Almost surely, 2^87378078 is an apocalyptic number.

87378078 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.

87378078 is a wasteful number, since it uses less digits than its factorization.

87378078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14563018.

The product of its (nonzero) digits is 526848, while the sum is 48.

The square root of 87378078 is about 9347.6241901352. The cubic root of 87378078 is about 443.7457049640.

The spelling of 87378078 in words is "eighty-seven million, three hundred seventy-eight thousand, seventy-eight".