87730388 has 12 divisors (see below), whose sum is σ = 156795072. Its totient is φ = 42931800.

The previous prime is 87730361. The next prime is 87730393. The reversal of 87730388 is 88303778.

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 3 ways as a sum of consecutive naturals, for example, 233138 + ... + 233513.

It is an arithmetic number, because the mean of its divisors is an integer number (13066256).

Almost surely, 2^87730388 is an apocalyptic number.

It is an amenable number.

87730388 is a deficient number, since it is larger than the sum of its proper divisors (69064684).

87730388 is a wasteful number, since it uses less digits than its factorization.

87730388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466702 (or 466700 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 87730388 is about 9366.4501279834. The cubic root of 87730388 is about 444.3413021119.

The spelling of 87730388 in words is "eighty-seven million, seven hundred thirty thousand, three hundred eighty-eight".