1968440 has 16 divisors (see below), whose sum is σ = 4429080. Its totient is φ = 787360.

The previous prime is 1968427. The next prime is 1968467. The reversal of 1968440 is 448691.

It is a junction number, because it is equal to n+sod(n) for n = 1968397 and 1968406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24566 + ... + 24645.

2^1968440 is an apocalyptic number.

1968440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1968440 is an abundant number, since it is smaller than the sum of its proper divisors (2460640).

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

1968440 is a wasteful number, since it uses less digits than its factorization.

1968440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49222 (or 49218 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1968440 is about 1403.0110477113. The cubic root of 1968440 is about 125.3258697331.

The spelling of 1968440 in words is "one million, nine hundred sixty-eight thousand, four hundred forty".