220228992 has 96 divisors (see below), whose sum is σ = 645868080. Its totient is φ = 72004608.

The previous prime is 220228969. The next prime is 220229027. The reversal of 220228992 is 299822022.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59253 + ... + 62859.

Almost surely, 2^220228992 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 220228992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322934040).

220228992 is an abundant number, since it is smaller than the sum of its proper divisors (425639088).

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

220228992 is a wasteful number, since it uses less digits than its factorization.

220228992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680 (or 3665 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 220228992 is about 14840.1142852742. The cubic root of 220228992 is about 603.8904527728.

The spelling of 220228992 in words is "two hundred twenty million, two hundred twenty-eight thousand, nine hundred ninety-two".