1220732 has 12 divisors (see below), whose sum is σ = 2171736. Its totient is φ = 600240.

The previous prime is 1220729. The next prime is 1220743. The reversal of 1220732 is 2370221.

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1220732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2258 + ... + 2745.

It is an arithmetic number, because the mean of its divisors is an integer number (180978).

2^1220732 is an apocalyptic number.

It is an amenable number.

1220732 is a deficient number, since it is larger than the sum of its proper divisors (951004).

1220732 is a wasteful number, since it uses less digits than its factorization.

1220732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5068 (or 5066 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1220732 is about 1104.8674128600. The cubic root of 1220732 is about 106.8743393368.

Adding to 1220732 its reverse (2370221), we get a palindrome (3590953).

The spelling of 1220732 in words is "one million, two hundred twenty thousand, seven hundred thirty-two".