438532172 has 24 divisors (see below), whose sum is σ = 840019152. Its totient is φ = 199080000.

The previous prime is 438532067. The next prime is 438532201. The reversal of 438532172 is 271235834.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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 in 7 ways as a sum of consecutive naturals, for example, 65954 + ... + 72297.

It is an arithmetic number, because the mean of its divisors is an integer number (35000798).

Almost surely, 2^438532172 is an apocalyptic number.

It is an amenable number.

438532172 is a deficient number, since it is larger than the sum of its proper divisors (401486980).

438532172 is a wasteful number, since it uses less digits than its factorization.

438532172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138329 (or 138327 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 438532172 is about 20941.1597577594. The cubic root of 438532172 is about 759.7437802043.

The spelling of 438532172 in words is "four hundred thirty-eight million, five hundred thirty-two thousand, one hundred seventy-two".