43642972 has 6 divisors (see below), whose sum is σ = 76375208. Its totient is φ = 21821484.

The previous prime is 43642957. The next prime is 43643003. The reversal of 43642972 is 27924634.

43642972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5455368 + ... + 5455375.

Almost surely, 2^43642972 is an apocalyptic number.

It is an amenable number.

43642972 is a deficient number, since it is larger than the sum of its proper divisors (32732236).

43642972 is a wasteful number, since it uses less digits than its factorization.

43642972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10910747 (or 10910745 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 43642972 is about 6606.2827671846. The cubic root of 43642972 is about 352.0773654844.

The spelling of 43642972 in words is "forty-three million, six hundred forty-two thousand, nine hundred seventy-two".