1345440 has 48 divisors (see below), whose sum is σ = 4239648. Its totient is φ = 358656.

The previous prime is 1345423. The next prime is 1345441. The reversal of 1345440 is 445431.

1345440 is nontrivially palindromic in base 11.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1345441) 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, 922 + ... + 1881.

It is an arithmetic number, because the mean of its divisors is an integer number (88326).

2^1345440 is an apocalyptic number.

1345440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345440 is an abundant number, since it is smaller than the sum of its proper divisors (2894208).

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

1345440 is a wasteful number, since it uses less digits than its factorization.

1345440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821 (or 2813 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1345440 is about 1159.9310324325. The cubic root of 1345440 is about 110.3963661900.

Subtracting from 1345440 its reverse (445431), we obtain a palindrome (900009).

The spelling of 1345440 in words is "one million, three hundred forty-five thousand, four hundred forty".