43073940 has 240 divisors, whose sum is σ = 158110848. Its totient is φ = 8692992.

The previous prime is 43073923. The next prime is 43073951. The reversal of 43073940 is 4937034.

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 = 43073898 and 43073907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1872769 + ... + 1872791.

Almost surely, 2^43073940 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 43073940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79055424).

43073940 is an abundant number, since it is smaller than the sum of its proper divisors (115036908).

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

43073940 is a wasteful number, since it uses less digits than its factorization.

43073940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 43073940 is about 6563.0739748993. The cubic root of 43073940 is about 350.5404982227.

The spelling of 43073940 in words is "forty-three million, seventy-three thousand, nine hundred forty".