87820078 has 8 divisors (see below), whose sum is σ = 131945472. Its totient is φ = 43838256.

The previous prime is 87820069. The next prime is 87820121. The reversal of 87820078 is 87002878.

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

It is a self number, because there is not a number n which added to its sum of digits gives 87820078.

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, 34350 + ... + 36817.

It is an arithmetic number, because the mean of its divisors is an integer number (16493184).

Almost surely, 2^87820078 is an apocalyptic number.

87820078 is a deficient number, since it is larger than the sum of its proper divisors (44125394).

87820078 is a wasteful number, since it uses less digits than its factorization.

87820078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71786.

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 87820078 is about 9371.2367380192. The cubic root of 87820078 is about 444.4926726877.

The spelling of 87820078 in words is "eighty-seven million, eight hundred twenty thousand, seventy-eight".