1333840 has 20 divisors (see below), whose sum is σ = 3101364. Its totient is φ = 533504.

The previous prime is 1333831. The next prime is 1333841. The reversal of 1333840 is 483331.

It can be written as a sum of positive squares in 2 ways, for example, as 913936 + 419904 = 956^2 + 648^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1333841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8257 + ... + 8416.

2^1333840 is an apocalyptic number.

1333840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1333840 is an abundant number, since it is smaller than the sum of its proper divisors (1767524).

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

1333840 is a wasteful number, since it uses less digits than its factorization.

1333840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16686 (or 16680 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1333840 is about 1154.9199106432. The cubic root of 1333840 is about 110.0781813349.

The spelling of 1333840 in words is "one million, three hundred thirty-three thousand, eight hundred forty".