73438 has 8 divisors (see below), whose sum is σ = 111888. Its totient is φ = 36144.

The previous prime is 73433. The next prime is 73453. The reversal of 73438 is 83437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73433) by changing a digit.

73438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 106 + ... + 397.

It is an arithmetic number, because the mean of its divisors is an integer number (13986).

2⁷³⁴³⁸ is an apocalyptic number.

73438 is a deficient number, since it is larger than the sum of its proper divisors (38450).

73438 is a wasteful number, since it uses less digits than its factorization.

73438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

The product of its digits is 2016, while the sum is 25.

The square root of 73438 is about 270.9944648881. The cubic root of 73438 is about 41.8768121292.

Subtracting 73438 from its reverse (83437), we obtain a palindrome (9999).

The spelling of 73438 in words is "seventy-three thousand, four hundred thirty-eight".