1672438 has 4 divisors (see below), whose sum is σ = 2508660. Its totient is φ = 836218.

The previous prime is 1672423. The next prime is 1672441. The reversal of 1672438 is 8342761.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 418108 + ... + 418111.

It is an arithmetic number, because the mean of its divisors is an integer number (627165).

2^1672438 is an apocalyptic number.

1672438 is a deficient number, since it is larger than the sum of its proper divisors (836222).

1672438 is an equidigital number, since it uses as much as digits as its factorization.

1672438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836221.

The product of its digits is 8064, while the sum is 31.

The square root of 1672438 is about 1293.2277448307. The cubic root of 1672438 is about 118.6998059334.

The spelling of 1672438 in words is "one million, six hundred seventy-two thousand, four hundred thirty-eight".