4129928 has 32 divisors (see below), whose sum is σ = 8579520. Its totient is φ = 1848000.

The previous prime is 4129927. The next prime is 4129933. The reversal of 4129928 is 8299214.

It is not an unprimeable number, because it can be changed into a prime (4129921) 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, 5918 + ... + 6578.

It is an arithmetic number, because the mean of its divisors is an integer number (268110).

Almost surely, 2^4129928 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 4129928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4289760).

4129928 is an abundant number, since it is smaller than the sum of its proper divisors (4449592).

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

4129928 is a wasteful number, since it uses less digits than its factorization.

4129928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 745 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 4129928 is about 2032.2224287710. Note that the first 3 decimals coincide. The cubic root of 4129928 is about 160.4405566564.

The spelling of 4129928 in words is "four million, one hundred twenty-nine thousand, nine hundred twenty-eight".