87403284 has 18 divisors (see below), whose sum is σ = 220936170. Its totient is φ = 29134416.

The previous prime is 87403247. The next prime is 87403357. The reversal of 87403284 is 48230478.

It can be written as a sum of positive squares in only one way, i.e., 69255684 + 18147600 = 8322^2 + 4260^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2427869 = 87403284 / (8 + 7 + 4 + 0 + 3 + 2 + 8 + 4).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1213899 + ... + 1213970.

Almost surely, 2^87403284 is an apocalyptic number.

It is an amenable number.

87403284 is an abundant number, since it is smaller than the sum of its proper divisors (133532886).

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

87403284 is a wasteful number, since it uses less digits than its factorization.

87403284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427879 (or 2427874 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 87403284 is about 9348.9723499431. The cubic root of 87403284 is about 443.7883700472.

The spelling of 87403284 in words is "eighty-seven million, four hundred three thousand, two hundred eighty-four".