121888528 has 40 divisors (see below), whose sum is σ = 244785920. Its totient is φ = 58734720.

The previous prime is 121888493. The next prime is 121888549. The reversal of 121888528 is 825888121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196603 + ... + 197221.

It is an arithmetic number, because the mean of its divisors is an integer number (6119648).

Almost surely, 2^121888528 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 121888528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122392960).

121888528 is an abundant number, since it is smaller than the sum of its proper divisors (122897392).

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

121888528 is a wasteful number, since it uses less digits than its factorization.

121888528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1049 counting only the distinct ones).

The product of its digits is 81920, while the sum is 43.

The square root of 121888528 is about 11040.3137636573. The cubic root of 121888528 is about 495.8164643525.

The spelling of 121888528 in words is "one hundred twenty-one million, eight hundred eighty-eight thousand, five hundred twenty-eight".