87928878 has 16 divisors (see below), whose sum is σ = 176077440. Its totient is φ = 29273016.

The previous prime is 87928873. The next prime is 87928889. The reversal of 87928878 is 87882978.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87928871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3700 + ... + 13767.

It is an arithmetic number, because the mean of its divisors is an integer number (11004840).

Almost surely, 2^87928878 is an apocalyptic number.

87928878 is an abundant number, since it is smaller than the sum of its proper divisors (88148562).

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

87928878 is a wasteful number, since it uses less digits than its factorization.

87928878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18311.

The product of its digits is 3612672, while the sum is 57.

The square root of 87928878 is about 9377.0399380615. The cubic root of 87928878 is about 444.6761570961.

The spelling of 87928878 in words is "eighty-seven million, nine hundred twenty-eight thousand, eight hundred seventy-eight".