1679240 has 16 divisors (see below), whose sum is σ = 3778380. Its totient is φ = 671680.

The previous prime is 1679233. The next prime is 1679261. The reversal of 1679240 is 429761.

It can be written as a sum of positive squares in 2 ways, for example, as 1435204 + 244036 = 1198^2 + 494^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 20951 + ... + 21030.

2^1679240 is an apocalyptic number.

1679240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1679240 is an abundant number, since it is smaller than the sum of its proper divisors (2099140).

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

1679240 is a wasteful number, since it uses less digits than its factorization.

1679240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41992 (or 41988 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1679240 is about 1295.8549301523. The cubic root of 1679240 is about 118.8605102376.

The spelling of 1679240 in words is "one million, six hundred seventy-nine thousand, two hundred forty".