987923220 has 24 divisors (see below), whose sum is σ = 2766185184. Its totient is φ = 263446176.

The previous prime is 987923207. The next prime is 987923239. The reversal of 987923220 is 22329789.

It is a super-3 number, since 3×987923220³ (a number of 28 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 8232634 + ... + 8232753.

It is an arithmetic number, because the mean of its divisors is an integer number (115257716).

Almost surely, 2^987923220 is an apocalyptic number.

It is an amenable number.

987923220 is an abundant number, since it is smaller than the sum of its proper divisors (1778261964).

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

987923220 is a wasteful number, since it uses less digits than its factorization.

987923220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16465399 (or 16465397 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 987923220 is about 31431.2459186714. The cubic root of 987923220 is about 995.9580916545.

The spelling of 987923220 in words is "nine hundred eighty-seven million, nine hundred twenty-three thousand, two hundred twenty".