1220728082 has 32 divisors (see below), whose sum is σ = 2228256000. Its totient is φ = 500416224.

The previous prime is 1220728079. The next prime is 1220728097. The reversal of 1220728082 is 2808270221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22907 + ... + 54462.

It is an arithmetic number, because the mean of its divisors is an integer number (69633000).

Almost surely, 2^1220728082 is an apocalyptic number.

1220728082 is a deficient number, since it is larger than the sum of its proper divisors (1007527918).

1220728082 is an equidigital number, since it uses as much as digits as its factorization.

1220728082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77415 (or 77401 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 1220728082 is about 34938.9193021192. The cubic root of 1220728082 is about 1068.7422499717.

The spelling of 1220728082 in words is "one billion, two hundred twenty million, seven hundred twenty-eight thousand, eighty-two".