43828320 has 48 divisors (see below), whose sum is σ = 138060720. Its totient is φ = 11687424.

The previous prime is 43828319. The next prime is 43828321. The reversal of 43828320 is 2382834.

It is an interprime number because it is at equal distance from previous prime (43828319) and next prime (43828321).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43828321) 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, 45175 + ... + 46134.

It is an arithmetic number, because the mean of its divisors is an integer number (2876265).

Almost surely, 2^43828320 is an apocalyptic number.

43828320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43828320 is an abundant number, since it is smaller than the sum of its proper divisors (94232400).

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

43828320 is a wasteful number, since it uses less digits than its factorization.

43828320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91327 (or 91319 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 43828320 is about 6620.2960658871. The cubic root of 43828320 is about 352.5750758053.

The spelling of 43828320 in words is "forty-three million, eight hundred twenty-eight thousand, three hundred twenty".