87682780 has 24 divisors (see below), whose sum is σ = 184529520. Its totient is φ = 34997760.

The previous prime is 87682733. The next prime is 87682807. The reversal of 87682780 is 8728678.

It is a self number, because there is not a number n which added to its sum of digits gives 87682780.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5356 + ... + 14284.

It is an arithmetic number, because the mean of its divisors is an integer number (7688730).

Almost surely, 2^87682780 is an apocalyptic number.

It is an amenable number.

87682780 is an abundant number, since it is smaller than the sum of its proper divisors (96846740).

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

87682780 is a wasteful number, since it uses less digits than its factorization.

87682780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9429 (or 9427 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 87682780 is about 9363.9083720421. The cubic root of 87682780 is about 444.2609117672.

The spelling of 87682780 in words is "eighty-seven million, six hundred eighty-two thousand, seven hundred eighty".