121644360 has 48 divisors (see below), whose sum is σ = 395345340. Its totient is φ = 32438400.

The previous prime is 121644337. The next prime is 121644361. The reversal of 121644360 is 63446121.

121644360 is a `hidden beast` number, since 1 + 216 + 443 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 105144516 + 16499844 = 10254^2 + 4062^2 .

It is not an unprimeable number, because it can be changed into a prime (121644361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168591 + ... + 169310.

Almost surely, 2^121644360 is an apocalyptic number.

121644360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121644360 is an abundant number, since it is smaller than the sum of its proper divisors (273700980).

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

121644360 is a wasteful number, since it uses less digits than its factorization.

121644360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337918 (or 337911 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 121644360 is about 11029.2502011696. The cubic root of 121644360 is about 495.4851686341.

The spelling of 121644360 in words is "one hundred twenty-one million, six hundred forty-four thousand, three hundred sixty".