1260440 has 16 divisors (see below), whose sum is σ = 2836080. Its totient is φ = 504160.

The previous prime is 1260439. The next prime is 1260461. The reversal of 1260440 is 440621.

It is a congruent number.

It is an unprimeable number.

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, 15716 + ... + 15795.

It is an arithmetic number, because the mean of its divisors is an integer number (177255).

2^1260440 is an apocalyptic number.

1260440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260440 is an abundant number, since it is smaller than the sum of its proper divisors (1575640).

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

1260440 is a wasteful number, since it uses less digits than its factorization.

1260440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31522 (or 31518 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1260440 is about 1122.6931905022. The cubic root of 1260440 is about 108.0208007489.

The spelling of 1260440 in words is "one million, two hundred sixty thousand, four hundred forty".