1316440 has 16 divisors (see below), whose sum is σ = 2962080. Its totient is φ = 526560.

The previous prime is 1316437. The next prime is 1316479. The reversal of 1316440 is 446131.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16416 + ... + 16495.

It is an arithmetic number, because the mean of its divisors is an integer number (185130).

2^1316440 is an apocalyptic number.

1316440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316440 is an abundant number, since it is smaller than the sum of its proper divisors (1645640).

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

1316440 is a wasteful number, since it uses less digits than its factorization.

1316440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32922 (or 32918 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1316440 is about 1147.3621921608. The cubic root of 1316440 is about 109.5974265473.

The spelling of 1316440 in words is "one million, three hundred sixteen thousand, four hundred forty".