87187278 has 16 divisors (see below), whose sum is σ = 175749120. Its totient is φ = 28833336.

The previous prime is 87187277. The next prime is 87187291. The reversal of 87187278 is 87278178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87187277) 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, 56448 + ... + 57971.

It is an arithmetic number, because the mean of its divisors is an integer number (10984320).

Almost surely, 2^87187278 is an apocalyptic number.

87187278 is an abundant number, since it is smaller than the sum of its proper divisors (88561842).

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

87187278 is a wasteful number, since it uses less digits than its factorization.

87187278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114551.

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

The square root of 87187278 is about 9337.4128108379. The cubic root of 87187278 is about 443.4224797960.

The spelling of 87187278 in words is "eighty-seven million, one hundred eighty-seven thousand, two hundred seventy-eight".