1220334320 has 40 divisors (see below), whose sum is σ = 2897653824. Its totient is φ = 477746432.

The previous prime is 1220334301. The next prime is 1220334329. The reversal of 1220334320 is 234330221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1220334292 and 1220334301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220334329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158519 + ... + 166038.

Almost surely, 2^1220334320 is an apocalyptic number.

1220334320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220334320 is an abundant number, since it is smaller than the sum of its proper divisors (1677319504).

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

1220334320 is a wasteful number, since it uses less digits than its factorization.

1220334320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324617 (or 324611 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1220334320 is about 34933.2838422041. The cubic root of 1220334320 is about 1068.6273252946.

Adding to 1220334320 its reverse (234330221), we get a palindrome (1454664541).

The spelling of 1220334320 in words is "one billion, two hundred twenty million, three hundred thirty-four thousand, three hundred twenty".