1220832 has 72 divisors (see below), whose sum is σ = 3623256. Its totient is φ = 404352.

The previous prime is 1220819. The next prime is 1220833. The reversal of 1220832 is 2380221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7698 + ... + 7854.

It is an arithmetic number, because the mean of its divisors is an integer number (50323).

2^1220832 is an apocalyptic number.

1220832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811628).

1220832 is an abundant number, since it is smaller than the sum of its proper divisors (2402424).

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

1220832 is an equidigital number, since it uses as much as digits as its factorization.

1220832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1220832 is about 1104.9126662320. The cubic root of 1220832 is about 106.8772575700.

The spelling of 1220832 in words is "one million, two hundred twenty thousand, eight hundred thirty-two".