993220 has 24 divisors (see below), whose sum is σ = 2127384. Its totient is φ = 389376.

The previous prime is 993217. The next prime is 993233. The reversal of 993220 is 22399.

It can be written as a sum of positive squares in 4 ways, for example, as 24964 + 968256 = 158^2 + 984^2 .

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592 + ... + 1528.

It is an arithmetic number, because the mean of its divisors is an integer number (88641).

2⁹⁹³²²⁰ is an apocalyptic number.

It is an amenable number.

993220 is an abundant number, since it is smaller than the sum of its proper divisors (1134164).

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

993220 is a wasteful number, since it uses less digits than its factorization.

993220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 993220 is about 996.6042343880. The cubic root of 993220 is about 99.7734873074.

The spelling of 993220 in words is "nine hundred ninety-three thousand, two hundred twenty".