1340786240 has 28 divisors (see below), whose sum is σ = 3192747996. Its totient is φ = 536314368.

The previous prime is 1340786231. The next prime is 1340786267. The reversal of 1340786240 is 426870431.

It can be written as a sum of positive squares in 2 ways, for example, as 341214784 + 999571456 = 18472^2 + 31616^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1340786240.

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, 2094659 + ... + 2095298.

Almost surely, 2^1340786240 is an apocalyptic number.

1340786240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340786240 is an abundant number, since it is smaller than the sum of its proper divisors (1851961756).

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

1340786240 is an equidigital number, since it uses as much as digits as its factorization.

1340786240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189974 (or 4189964 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 1340786240 is about 36616.7480806256. The cubic root of 1340786240 is about 1102.6893534152.

The spelling of 1340786240 in words is "one billion, three hundred forty million, seven hundred eighty-six thousand, two hundred forty".