1340433320 has 16 divisors (see below), whose sum is σ = 3015975060. Its totient is φ = 536173312.

The previous prime is 1340433313. The next prime is 1340433383. The reversal of 1340433320 is 233340431.

It can be written as a sum of positive squares in 2 ways, for example, as 1287230884 + 53202436 = 35878^2 + 7294^2 .

It is a super-2 number, since 2×1340433320² = 3593522970732444800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16755377 + ... + 16755456.

Almost surely, 2^1340433320 is an apocalyptic number.

1340433320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340433320 is an abundant number, since it is smaller than the sum of its proper divisors (1675541740).

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

1340433320 is a wasteful number, since it uses less digits than its factorization.

1340433320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33510844 (or 33510840 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 1340433320 is about 36611.9286572013. The cubic root of 1340433320 is about 1102.5925954422.

Adding to 1340433320 its reverse (233340431), we get a palindrome (1573773751).

The spelling of 1340433320 in words is "one billion, three hundred forty million, four hundred thirty-three thousand, three hundred twenty".