1896440 has 64 divisors (see below), whose sum is σ = 5261760. Its totient is φ = 599040.

The previous prime is 1896431. The next prime is 1896443. The reversal of 1896440 is 446981.

It is a zygodrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1896397 and 1896406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1896443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3380 + ... + 3900.

It is an arithmetic number, because the mean of its divisors is an integer number (82215).

2^1896440 is an apocalyptic number.

1896440 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 1896440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2630880).

1896440 is an abundant number, since it is smaller than the sum of its proper divisors (3365320).

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

1896440 is a wasteful number, since it uses less digits than its factorization.

1896440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 548 counting only the distinct ones).

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

The square root of 1896440 is about 1377.1129220220. The cubic root of 1896440 is about 123.7788287765.

The spelling of 1896440 in words is "one million, eight hundred ninety-six thousand, four hundred forty".