43438072 has 8 divisors (see below), whose sum is σ = 81446400. Its totient is φ = 21719032.

The previous prime is 43438069. The next prime is 43438079. The reversal of 43438072 is 27083434.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43438079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2714872 + ... + 2714887.

It is an arithmetic number, because the mean of its divisors is an integer number (10180800).

Almost surely, 2^43438072 is an apocalyptic number.

It is an amenable number.

43438072 is a deficient number, since it is larger than the sum of its proper divisors (38008328).

43438072 is a wasteful number, since it uses less digits than its factorization.

43438072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5429765 (or 5429761 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 43438072 is about 6590.7565574826. The cubic root of 43438072 is about 351.5255099597.

The spelling of 43438072 in words is "forty-three million, four hundred thirty-eight thousand, seventy-two".