43320972 has 12 divisors (see below), whose sum is σ = 101082296. Its totient is φ = 14440320.

The previous prime is 43320971. The next prime is 43320989. The reversal of 43320972 is 27902334.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (43320971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805029 + ... + 1805052.

Almost surely, 2^43320972 is an apocalyptic number.

It is an amenable number.

43320972 is an abundant number, since it is smaller than the sum of its proper divisors (57761324).

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

43320972 is a wasteful number, since it uses less digits than its factorization.

43320972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610088 (or 3610086 counting only the distinct ones).

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

The square root of 43320972 is about 6581.8669084083. The cubic root of 43320972 is about 351.2093458181.

The spelling of 43320972 in words is "forty-three million, three hundred twenty thousand, nine hundred seventy-two".