43283640 has 64 divisors (see below), whose sum is σ = 131103360. Its totient is φ = 11431040.

The previous prime is 43283629. The next prime is 43283687. The reversal of 43283640 is 4638234.

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

It is a junction number, because it is equal to n+sod(n) for n = 43283598 and 43283607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11155 + ... + 14525.

It is an arithmetic number, because the mean of its divisors is an integer number (2048490).

Almost surely, 2^43283640 is an apocalyptic number.

43283640 is a gapful number since it is divisible by the number (40) 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 43283640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65551680).

43283640 is an abundant number, since it is smaller than the sum of its proper divisors (87819720).

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

43283640 is a wasteful number, since it uses less digits than its factorization.

43283640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492 (or 3488 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 43283640 is about 6579.0303236875. The cubic root of 43283640 is about 351.1084315284.

The spelling of 43283640 in words is "forty-three million, two hundred eighty-three thousand, six hundred forty".