87284756 has 12 divisors (see below), whose sum is σ = 164498292. Its totient is φ = 40285248.

The previous prime is 87284741. The next prime is 87284759. The reversal of 87284756 is 65748278.

It can be written as a sum of positive squares in 2 ways, for example, as 32672656 + 54612100 = 5716^2 + 7390^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87284756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87284759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839225 + ... + 839328.

It is an arithmetic number, because the mean of its divisors is an integer number (13708191).

Almost surely, 2^87284756 is an apocalyptic number.

It is an amenable number.

87284756 is a deficient number, since it is larger than the sum of its proper divisors (77213536).

87284756 is a wasteful number, since it uses less digits than its factorization.

87284756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678570 (or 1678568 counting only the distinct ones).

The product of its digits is 752640, while the sum is 47.

The square root of 87284756 is about 9342.6311069206. The cubic root of 87284756 is about 443.5876714728.

The spelling of 87284756 in words is "eighty-seven million, two hundred eighty-four thousand, seven hundred fifty-six".