1220736056 has 16 divisors (see below), whose sum is σ = 2289911040. Its totient is φ = 610093120.

The previous prime is 1220736037. The next prime is 1220736089. The reversal of 1220736056 is 6506370221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14840 + ... + 51591.

It is an arithmetic number, because the mean of its divisors is an integer number (143119440).

Almost surely, 2^1220736056 is an apocalyptic number.

It is an amenable number.

1220736056 is a deficient number, since it is larger than the sum of its proper divisors (1069174984).

1220736056 is a wasteful number, since it uses less digits than its factorization.

1220736056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68734 (or 68730 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1220736056 is about 34939.0334153651. The cubic root of 1220736056 is about 1068.7445770344.

The spelling of 1220736056 in words is "one billion, two hundred twenty million, seven hundred thirty-six thousand, fifty-six".