1346440 has 32 divisors (see below), whose sum is σ = 3107160. Its totient is φ = 524800.

The previous prime is 1346437. The next prime is 1346447. The reversal of 1346440 is 446431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 568516 + 777924 = 754^2 + 882^2 .

It is not an unprimeable number, because it can be changed into a prime (1346447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230 + ... + 2050.

2^1346440 is an apocalyptic number.

1346440 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 1346440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1553580).

1346440 is an abundant number, since it is smaller than the sum of its proper divisors (1760720).

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

1346440 is a wasteful number, since it uses less digits than its factorization.

1346440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1346440 is about 1160.3620124771. The cubic root of 1346440 is about 110.4237101634.

Subtracting from 1346440 its reverse (446431), we obtain a palindrome (900009).

The spelling of 1346440 in words is "one million, three hundred forty-six thousand, four hundred forty".