1894240 has 24 divisors (see below), whose sum is σ = 4475520. Its totient is φ = 757632.

The previous prime is 1894229. The next prime is 1894247. The reversal of 1894240 is 424981.

It is a junction number, because it is equal to n+sod(n) for n = 1894199 and 1894208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894247) by changing a digit.

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, 5760 + ... + 6079.

It is an arithmetic number, because the mean of its divisors is an integer number (186480).

2^1894240 is an apocalyptic number.

1894240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1894240 is an abundant number, since it is smaller than the sum of its proper divisors (2581280).

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

1894240 is a wasteful number, since it uses less digits than its factorization.

1894240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11854 (or 11846 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1894240 is about 1376.3139176801. The cubic root of 1894240 is about 123.7309462893.

The spelling of 1894240 in words is "one million, eight hundred ninety-four thousand, two hundred forty".