220989396 has 48 divisors (see below), whose sum is σ = 540792000. Its totient is φ = 70140672.

The previous prime is 220989371. The next prime is 220989407. The reversal of 220989396 is 693989022.

220989396 = T₂₄₂₄ + T₂₄₂₅ + ... + T₂₄₉₆.

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 15 ways as a sum of consecutive naturals, for example, 21055 + ... + 29753.

It is an arithmetic number, because the mean of its divisors is an integer number (11266500).

Almost surely, 2^220989396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220989396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270396000).

220989396 is an abundant number, since it is smaller than the sum of its proper divisors (319802604).

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

220989396 is a wasteful number, since it uses less digits than its factorization.

220989396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8808 (or 8806 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 220989396 is about 14865.7120919248. The cubic root of 220989396 is about 604.5846895845.

The spelling of 220989396 in words is "two hundred twenty million, nine hundred eighty-nine thousand, three hundred ninety-six".