987228385 has 32 divisors (see below), whose sum is σ = 1399265280. Its totient is φ = 659193600.

The previous prime is 987228377. The next prime is 987228397. The reversal of 987228385 is 583822789.

It is not a de Polignac number, because 987228385 - 2³ = 987228377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132951 + ... + 140179.

It is an arithmetic number, because the mean of its divisors is an integer number (43727040).

Almost surely, 2^987228385 is an apocalyptic number.

It is an amenable number.

987228385 is a deficient number, since it is larger than the sum of its proper divisors (412036895).

987228385 is a wasteful number, since it uses less digits than its factorization.

987228385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449.

The product of its digits is 1935360, while the sum is 52.

The square root of 987228385 is about 31420.1907218909. The cubic root of 987228385 is about 995.7245415058.

The spelling of 987228385 in words is "nine hundred eighty-seven million, two hundred twenty-eight thousand, three hundred eighty-five".