1340272260 has 72 divisors (see below), whose sum is σ = 4078652760. Its totient is φ = 356249088.

The previous prime is 1340272249. The next prime is 1340272277. The reversal of 1340272260 is 622720431.

1340272260 is a `hidden beast` number, since 134 + 0 + 272 + 260 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 56340036 + 1283932224 = 7506^2 + 35832^2 .

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 23 ways as a sum of consecutive naturals, for example, 44446 + ... + 68234.

It is an arithmetic number, because the mean of its divisors is an integer number (56647955).

Almost surely, 2^1340272260 is an apocalyptic number.

1340272260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340272260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2039326380).

1340272260 is an abundant number, since it is smaller than the sum of its proper divisors (2738380500).

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

1340272260 is a wasteful number, since it uses less digits than its factorization.

1340272260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24117 (or 24112 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1340272260 is about 36609.7290347798. The cubic root of 1340272260 is about 1102.5484329379.

Adding to 1340272260 its reverse (622720431), we get a palindrome (1962992691).

The spelling of 1340272260 in words is "one billion, three hundred forty million, two hundred seventy-two thousand, two hundred sixty".