43686734 has 48 divisors (see below), whose sum is σ = 83770848. Its totient is φ = 16930368.

The previous prime is 43686707. The next prime is 43686737. The reversal of 43686734 is 43768634.

It is a junction number, because it is equal to n+sod(n) for n = 43686691 and 43686700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43686737) 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, 67199 + ... + 67845.

It is an arithmetic number, because the mean of its divisors is an integer number (1745226).

Almost surely, 2^43686734 is an apocalyptic number.

43686734 is a deficient number, since it is larger than the sum of its proper divisors (40084114).

43686734 is a wasteful number, since it uses less digits than its factorization.

43686734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 722 counting only the distinct ones).

The product of its digits is 290304, while the sum is 41.

The square root of 43686734 is about 6609.5940873854. The cubic root of 43686734 is about 352.1950053697.

The spelling of 43686734 in words is "forty-three million, six hundred eighty-six thousand, seven hundred thirty-four".