43730928 has 100 divisors (see below), whose sum is σ = 129814608. Its totient is φ = 14204160.

The previous prime is 43730923. The next prime is 43730971. The reversal of 43730928 is 82903734.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 43730892 and 43730901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43730923) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52725 + ... + 53547.

Almost surely, 2^43730928 is an apocalyptic number.

43730928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43730928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64907304).

43730928 is an abundant number, since it is smaller than the sum of its proper divisors (86083680).

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

43730928 is a wasteful number, since it uses less digits than its factorization.

43730928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 43730928 is about 6612.9364128200. The cubic root of 43730928 is about 352.3137268445.

The spelling of 43730928 in words is "forty-three million, seven hundred thirty thousand, nine hundred twenty-eight".