43830820 has 48 divisors (see below), whose sum is σ = 101098368. Its totient is φ = 15829760.

The previous prime is 43830817. The next prime is 43830823. The reversal of 43830820 is 2803834.

It is an interprime number because it is at equal distance from previous prime (43830817) and next prime (43830823).

It is a super-2 number, since 2×43830820² = 3842281563744800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43830823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36144 + ... + 37336.

It is an arithmetic number, because the mean of its divisors is an integer number (2106216).

Almost surely, 2^43830820 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 43830820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50549184).

43830820 is an abundant number, since it is smaller than the sum of its proper divisors (57267548).

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

43830820 is a wasteful number, since it uses less digits than its factorization.

43830820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 43830820 is about 6620.4848765026. The cubic root of 43830820 is about 352.5817793928.

The spelling of 43830820 in words is "forty-three million, eight hundred thirty thousand, eight hundred twenty".