1220876680 has 96 divisors (see below), whose sum is σ = 2868174720. Its totient is φ = 467596800.

The previous prime is 1220876659. The next prime is 1220876719. The reversal of 1220876680 is 866780221.

1220876680 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 4504945 + ... + 4505215.

It is an arithmetic number, because the mean of its divisors is an integer number (29876820).

Almost surely, 2^1220876680 is an apocalyptic number.

1220876680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220876680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434087360).

1220876680 is an abundant number, since it is smaller than the sum of its proper divisors (1647298040).

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

1220876680 is a wasteful number, since it uses less digits than its factorization.

1220876680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1220876680 is about 34941.0457771372. The cubic root of 1220876680 is about 1068.7856138515.

It can be divided in two parts, 12208 and 76680, that added together give a palindrome (88888).

The spelling of 1220876680 in words is "one billion, two hundred twenty million, eight hundred seventy-six thousand, six hundred eighty".