1220682008 has 128 divisors (see below), whose sum is σ = 3040571520. Its totient is φ = 445685760.

The previous prime is 1220681951. The next prime is 1220682011. The reversal of 1220682008 is 8002860221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 654998 + ... + 656858.

It is an arithmetic number, because the mean of its divisors is an integer number (23754465).

Almost surely, 2^1220682008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220682008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520285760).

1220682008 is an abundant number, since it is smaller than the sum of its proper divisors (1819889512).

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

1220682008 is a wasteful number, since it uses less digits than its factorization.

1220682008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957 (or 1953 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1220682008 is about 34938.2599452234. The cubic root of 1220682008 is about 1068.7288039388.

The spelling of 1220682008 in words is "one billion, two hundred twenty million, six hundred eighty-two thousand, eight".