43940920 has 96 divisors (see below), whose sum is σ = 111099600. Its totient is φ = 15584256.

The previous prime is 43940893. The next prime is 43940921. The reversal of 43940920 is 2904934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43940921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245391 + ... + 245569.

Almost surely, 2^43940920 is an apocalyptic number.

43940920 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 43940920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55549800).

43940920 is an abundant number, since it is smaller than the sum of its proper divisors (67158680).

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

43940920 is a wasteful number, since it uses less digits than its factorization.

43940920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 43940920 is about 6628.7947622475. The cubic root of 43940920 is about 352.8767529254.

The spelling of 43940920 in words is "forty-three million, nine hundred forty thousand, nine hundred twenty".