121647000 has 256 divisors, whose sum is σ = 415134720. Its totient is φ = 29568000.

The previous prime is 121646989. The next prime is 121647037. The reversal of 121647000 is 746121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2828979 + ... + 2829021.

It is an arithmetic number, because the mean of its divisors is an integer number (1621620).

Almost surely, 2^121647000 is an apocalyptic number.

121647000 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 121647000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207567360).

121647000 is an abundant number, since it is smaller than the sum of its proper divisors (293487720).

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

121647000 is a wasteful number, since it uses less digits than its factorization.

121647000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 121647000 is about 11029.3698822734. The cubic root of 121647000 is about 495.4887530485.

The spelling of 121647000 in words is "one hundred twenty-one million, six hundred forty-seven thousand".