121728832 has 28 divisors (see below), whose sum is σ = 241950240. Its totient is φ = 60765056.

The previous prime is 121728797. The next prime is 121728881. The reversal of 121728832 is 238827121.

It is a super-3 number, since 3×121728832³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52563 + ... + 54829.

It is an arithmetic number, because the mean of its divisors is an integer number (8641080).

Almost surely, 2^121728832 is an apocalyptic number.

It is an amenable number.

121728832 is a deficient number, since it is larger than the sum of its proper divisors (120221408).

121728832 is an equidigital number, since it uses as much as digits as its factorization.

121728832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118 (or 3108 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 121728832 is about 11033.0789900191. The cubic root of 121728832 is about 495.5998333247.

The spelling of 121728832 in words is "one hundred twenty-one million, seven hundred twenty-eight thousand, eight hundred thirty-two".