87163228 has 24 divisors (see below), whose sum is σ = 155897280. Its totient is φ = 42631680.

The previous prime is 87163211. The next prime is 87163273. The reversal of 87163228 is 82236178.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34488 + ... + 36928.

It is an arithmetic number, because the mean of its divisors is an integer number (6495720).

Almost surely, 2^87163228 is an apocalyptic number.

It is an amenable number.

87163228 is a deficient number, since it is larger than the sum of its proper divisors (68734052).

87163228 is a wasteful number, since it uses less digits than its factorization.

87163228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637 (or 2635 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 87163228 is about 9336.1248920524. The cubic root of 87163228 is about 443.3817043848.

The spelling of 87163228 in words is "eighty-seven million, one hundred sixty-three thousand, two hundred twenty-eight".