1220785882 has 8 divisors (see below), whose sum is σ = 1831414752. Its totient is φ = 610314300.

The previous prime is 1220785879. The next prime is 1220785913. The reversal of 1220785882 is 2885870221.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 17494 + ... + 52417.

It is an arithmetic number, because the mean of its divisors is an integer number (228926844).

Almost surely, 2^1220785882 is an apocalyptic number.

1220785882 is a deficient number, since it is larger than the sum of its proper divisors (610628870).

1220785882 is an equidigital number, since it uses as much as digits as its factorization.

1220785882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78644.

The product of its (nonzero) digits is 143360, while the sum is 43.

The square root of 1220785882 is about 34939.7464501390. The cubic root of 1220785882 is about 1068.7591175903.

It can be divided in two parts, 12207 and 85882, that added together give a palindrome (98089).

The spelling of 1220785882 in words is "one billion, two hundred twenty million, seven hundred eighty-five thousand, eight hundred eighty-two".