121706328 has 16 divisors (see below), whose sum is σ = 304265880. Its totient is φ = 40568768.

The previous prime is 121706323. The next prime is 121706399. The reversal of 121706328 is 823607121.

It is a junction number, because it is equal to n+sod(n) for n = 121706295 and 121706304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121706323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2535525 + ... + 2535572.

Almost surely, 2^121706328 is an apocalyptic number.

It is an amenable number.

121706328 is an abundant number, since it is smaller than the sum of its proper divisors (182559552).

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

121706328 is a wasteful number, since it uses less digits than its factorization.

121706328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071106 (or 5071102 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 121706328 is about 11032.0591006394. The cubic root of 121706328 is about 495.5692909412.

The spelling of 121706328 in words is "one hundred twenty-one million, seven hundred six thousand, three hundred twenty-eight".