1673426 has 4 divisors (see below), whose sum is σ = 2510142. Its totient is φ = 836712.

The previous prime is 1673407. The next prime is 1673437. The reversal of 1673426 is 6243761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6243761 = 19 ⋅328619.

It can be written as a sum of positive squares in only one way, i.e., 1651225 + 22201 = 1285^2 + 149^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418355 + ... + 418358.

2^1673426 is an apocalyptic number.

1673426 is a deficient number, since it is larger than the sum of its proper divisors (836716).

1673426 is an equidigital number, since it uses as much as digits as its factorization.

1673426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836715.

The product of its digits is 6048, while the sum is 29.

The square root of 1673426 is about 1293.6096783806. The cubic root of 1673426 is about 118.7231754738.

The spelling of 1673426 in words is "one million, six hundred seventy-three thousand, four hundred twenty-six".