1220589320 has 32 divisors (see below), whose sum is σ = 2760721920. Its totient is φ = 485676480.

The previous prime is 1220589301. The next prime is 1220589347. The reversal of 1220589320 is 239850221.

It is a happy 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, 72242 + ... + 87521.

It is an arithmetic number, because the mean of its divisors is an integer number (86272560).

Almost surely, 2^1220589320 is an apocalyptic number.

1220589320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220589320 is an abundant number, since it is smaller than the sum of its proper divisors (1540132600).

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

1220589320 is a wasteful number, since it uses less digits than its factorization.

1220589320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159965 (or 159961 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1220589320 is about 34936.9334658896. The cubic root of 1220589320 is about 1068.7017532567.

The spelling of 1220589320 in words is "one billion, two hundred twenty million, five hundred eighty-nine thousand, three hundred twenty".