87278856 has 128 divisors (see below), whose sum is σ = 269952000. Its totient is φ = 22954752.

The previous prime is 87278831. The next prime is 87278869. The reversal of 87278856 is 65887278.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 87278799 and 87278808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117735 + ... + 118473.

It is an arithmetic number, because the mean of its divisors is an integer number (2109000).

Almost surely, 2^87278856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87278856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134976000).

87278856 is an abundant number, since it is smaller than the sum of its proper divisors (182673144).

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

87278856 is a wasteful number, since it uses less digits than its factorization.

87278856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811 (or 807 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 51.

The square root of 87278856 is about 9342.3153447098. The cubic root of 87278856 is about 443.5776765002.

The spelling of 87278856 in words is "eighty-seven million, two hundred seventy-eight thousand, eight hundred fifty-six".