220021992 has 48 divisors (see below), whose sum is σ = 596608740. Its totient is φ = 73252608.

The previous prime is 220021981. The next prime is 220022009. The reversal of 220021992 is 299120022.

It can be written as a sum of positive squares in 2 ways, for example, as 207532836 + 12489156 = 14406^2 + 3534^2 .

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 11 ways as a sum of consecutive naturals, for example, 90748 + ... + 93140.

Almost surely, 2^220021992 is an apocalyptic number.

It is an amenable number.

220021992 is an abundant number, since it is smaller than the sum of its proper divisors (376586748).

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

220021992 is a wasteful number, since it uses less digits than its factorization.

220021992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682 (or 3675 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 220021992 is about 14833.1383058340. The cubic root of 220021992 is about 603.7011883946.

The spelling of 220021992 in words is "two hundred twenty million, twenty-one thousand, nine hundred ninety-two".