992220 has 48 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 252736.

The previous prime is 992219. The next prime is 992231. The reversal of 992220 is 22299.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021 + ... + 1739.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2⁹⁹²²²⁰ 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 992220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451520).

992220 is an abundant number, since it is smaller than the sum of its proper divisors (1910820).

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

992220 is a wasteful number, since it uses less digits than its factorization.

992220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 992220 is about 996.1024043742. The cubic root of 992220 is about 99.7399912069.

It can be divided in two parts, 9 and 92220, that added together give a palindrome (92229).

The spelling of 992220 in words is "nine hundred ninety-two thousand, two hundred twenty".