920000220 has 96 divisors (see below), whose sum is σ = 2760645888. Its totient is φ = 228099072.

The previous prime is 920000219. The next prime is 920000243. The reversal of 920000220 is 22000029.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 920000220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79227 + ... + 90093.

It is an arithmetic number, because the mean of its divisors is an integer number (28756728).

Almost surely, 2^920000220 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 920000220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1380322944).

920000220 is an abundant number, since it is smaller than the sum of its proper divisors (1840645668).

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

920000220 is a wasteful number, since it uses less digits than its factorization.

920000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10979 (or 10977 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 920000220 is about 30331.5054027986. The cubic root of 920000220 is about 972.5889037440.

Adding to 920000220 its reverse (22000029), we get a palindrome (942000249).

The spelling of 920000220 in words is "nine hundred twenty million, two hundred twenty", and thus it is an aban number.