1404340 has 36 divisors (see below), whose sum is σ = 3432996. Its totient is φ = 481152.

The previous prime is 1404323. The next prime is 1404367. The reversal of 1404340 is 434041.

It can be written as a sum of positive squares in 2 ways, for example, as 853776 + 550564 = 924^2 + 742^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264 + ... + 1696.

It is an arithmetic number, because the mean of its divisors is an integer number (95361).

2^1404340 is an apocalyptic number.

1404340 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 1404340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1716498).

1404340 is an abundant number, since it is smaller than the sum of its proper divisors (2028656).

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

1404340 is a wasteful number, since it uses less digits than its factorization.

1404340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1404340 is about 1185.0485222133. The cubic root of 1404340 is about 111.9843728197.

Adding to 1404340 its reverse (434041), we get a palindrome (1838381).

Subtracting from 1404340 its reverse (434041), we obtain a cube (970299 = 99³).

The spelling of 1404340 in words is "one million, four hundred four thousand, three hundred forty".