43990928 has 40 divisors (see below), whose sum is σ = 92166720. Its totient is φ = 20269440.

The previous prime is 43990907. The next prime is 43990967. The reversal of 43990928 is 82909934.

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, 9293 + ... + 13203.

It is an arithmetic number, because the mean of its divisors is an integer number (2304168).

Almost surely, 2^43990928 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 43990928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46083360).

43990928 is an abundant number, since it is smaller than the sum of its proper divisors (48175792).

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

43990928 is a wasteful number, since it uses less digits than its factorization.

43990928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975 (or 3969 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 43990928 is about 6632.5657177295. The cubic root of 43990928 is about 353.0105687436.

The spelling of 43990928 in words is "forty-three million, nine hundred ninety thousand, nine hundred twenty-eight".