1316240 has 20 divisors (see below), whose sum is σ = 3060444. Its totient is φ = 526464.

The previous prime is 1316239. The next prime is 1316251. The reversal of 1316240 is 426131.

It can be written as a sum of positive squares in 2 ways, for example, as 891136 + 425104 = 944^2 + 652^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8147 + ... + 8306.

2^1316240 is an apocalyptic number.

1316240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316240 is an abundant number, since it is smaller than the sum of its proper divisors (1744204).

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

1316240 is a wasteful number, since it uses less digits than its factorization.

1316240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16466 (or 16460 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1316240 is about 1147.2750324138. The cubic root of 1316240 is about 109.5918760739.

The spelling of 1316240 in words is "one million, three hundred sixteen thousand, two hundred forty".