87278178 has 16 divisors (see below), whose sum is σ = 187983936. Its totient is φ = 26854800.

The previous prime is 87278167. The next prime is 87278189. The reversal of 87278178 is 87187278.

It is an interprime number because it is at equal distance from previous prime (87278167) and next prime (87278189).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559398 + ... + 559553.

It is an arithmetic number, because the mean of its divisors is an integer number (11748996).

Almost surely, 2^87278178 is an apocalyptic number.

87278178 is an abundant number, since it is smaller than the sum of its proper divisors (100705758).

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

87278178 is a wasteful number, since it uses less digits than its factorization.

87278178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118969.

The product of its digits is 351232, while the sum is 48.

The square root of 87278178 is about 9342.2790581314. The cubic root of 87278178 is about 443.5765278965.

The spelling of 87278178 in words is "eighty-seven million, two hundred seventy-eight thousand, one hundred seventy-eight".