87278460 has 48 divisors (see below), whose sum is σ = 245678496. Its totient is φ = 23150592.

The previous prime is 87278447. The next prime is 87278461. The reversal of 87278460 is 6487278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87278461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7812 + ... + 15348.

It is an arithmetic number, because the mean of its divisors is an integer number (5118302).

Almost surely, 2^87278460 is an apocalyptic number.

It is an amenable number.

87278460 is an abundant number, since it is smaller than the sum of its proper divisors (158400036).

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

87278460 is a wasteful number, since it uses less digits than its factorization.

87278460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7742 (or 7740 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 87278460 is about 9342.2941507962. The cubic root of 87278460 is about 443.5770056350.

The spelling of 87278460 in words is "eighty-seven million, two hundred seventy-eight thousand, four hundred sixty".