43620434 has 16 divisors (see below), whose sum is σ = 76870080. Its totient is φ = 18302160.

The previous prime is 43620349. The next prime is 43620439. The reversal of 43620434 is 43402634.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43620439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75974 + ... + 76545.

It is an arithmetic number, because the mean of its divisors is an integer number (4804380).

Almost surely, 2^43620434 is an apocalyptic number.

43620434 is a deficient number, since it is larger than the sum of its proper divisors (33249646).

43620434 is a wasteful number, since it uses less digits than its factorization.

43620434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152545.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 43620434 is about 6604.5767464691. The cubic root of 43620434 is about 352.0167487296.

The spelling of 43620434 in words is "forty-three million, six hundred twenty thousand, four hundred thirty-four".