43630432 has 48 divisors (see below), whose sum is σ = 91763280. Its totient is φ = 20348928.

The previous prime is 43630343. The next prime is 43630453. The reversal of 43630432 is 23403634.

It is a super-2 number, since 2×43630432² = 3807229193013248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43630397 and 43630406.

It is a congruent number.

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, 75328 + ... + 75904.

It is an arithmetic number, because the mean of its divisors is an integer number (1911735).

Almost surely, 2^43630432 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 43630432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45881640).

43630432 is an abundant number, since it is smaller than the sum of its proper divisors (48132848).

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

43630432 is a wasteful number, since it uses less digits than its factorization.

43630432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 43630432 is about 6605.3336024761. Note that the first 3 decimals coincide. The cubic root of 43630432 is about 352.0436412833.

The spelling of 43630432 in words is "forty-three million, six hundred thirty thousand, four hundred thirty-two".