438672735 has 24 divisors (see below), whose sum is σ = 778914864. Its totient is φ = 228251520.

The previous prime is 438672697. The next prime is 438672737. The reversal of 438672735 is 537276834.

It is not a de Polignac number, because 438672735 - 2⁶ = 438672671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438672737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117037 + ... + 120726.

It is an arithmetic number, because the mean of its divisors is an integer number (32454786).

Almost surely, 2^438672735 is an apocalyptic number.

438672735 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

438672735 is a deficient number, since it is larger than the sum of its proper divisors (340242129).

438672735 is a wasteful number, since it uses less digits than its factorization.

438672735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237815 (or 237812 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 438672735 is about 20944.5156305893. The cubic root of 438672735 is about 759.8249452543.

The spelling of 438672735 in words is "four hundred thirty-eight million, six hundred seventy-two thousand, seven hundred thirty-five".