121928704 has 88 divisors (see below), whose sum is σ = 264112128. Its totient is φ = 56094720.

The previous prime is 121928699. The next prime is 121928707. The reversal of 121928704 is 407829121.

It is a self number, because there is not a number n which added to its sum of digits gives 121928704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121928707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730029 + ... + 730195.

Almost surely, 2^121928704 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 121928704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132056064).

121928704 is an abundant number, since it is smaller than the sum of its proper divisors (142183424).

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

121928704 is a wasteful number, since it uses less digits than its factorization.

121928704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 121928704 is about 11042.1331272540. The cubic root of 121928704 is about 495.8709341602.

The spelling of 121928704 in words is "one hundred twenty-one million, nine hundred twenty-eight thousand, seven hundred four".