1673240 has 32 divisors (see below), whose sum is σ = 3834000. Its totient is φ = 657024.

The previous prime is 1673237. The next prime is 1673249. The reversal of 1673240 is 423761.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2006 + ... + 2714.

2^1673240 is an apocalyptic number.

1673240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1673240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1917000).

1673240 is an abundant number, since it is smaller than the sum of its proper divisors (2160760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1673240 is a wasteful number, since it uses less digits than its factorization.

1673240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1673240 is about 1293.5377845274. The cubic root of 1673240 is about 118.7187766479.

The spelling of 1673240 in words is "one million, six hundred seventy-three thousand, two hundred forty".