285130088 has 32 divisors (see below), whose sum is σ = 554941800. Its totient is φ = 137179392.

The previous prime is 285130063. The next prime is 285130133. The reversal of 285130088 is 880031582.

It can be written as a sum of positive squares in 4 ways, for example, as 143472484 + 141657604 = 11978^2 + 11902^2 .

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, 71606 + ... + 75482.

Almost surely, 2^285130088 is an apocalyptic number.

It is an amenable number.

285130088 is a deficient number, since it is larger than the sum of its proper divisors (269811712).

285130088 is a wasteful number, since it uses less digits than its factorization.

285130088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229 (or 4225 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 285130088 is about 16885.7954506147. The cubic root of 285130088 is about 658.1845486482.

The spelling of 285130088 in words is "two hundred eighty-five million, one hundred thirty thousand, eighty-eight".