121647008 has 48 divisors (see below), whose sum is σ = 279316800. Its totient is φ = 52129728.

The previous prime is 121646989. The next prime is 121647037. The reversal of 121647008 is 800746121.

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 7 ways as a sum of consecutive naturals, for example, 5435 + ... + 16517.

It is an arithmetic number, because the mean of its divisors is an integer number (5819100).

Almost surely, 2^121647008 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 121647008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139658400).

121647008 is an abundant number, since it is smaller than the sum of its proper divisors (157669792).

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

121647008 is an equidigital number, since it uses as much as digits as its factorization.

121647008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11114 (or 11092 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 121647008 is about 11029.3702449415. The cubic root of 121647008 is about 495.4887639103.

The spelling of 121647008 in words is "one hundred twenty-one million, six hundred forty-seven thousand, eight".