1340506266 has 64 divisors (see below), whose sum is σ = 3038238720. Its totient is φ = 390568640.

The previous prime is 1340506241. The next prime is 1340506273. The reversal of 1340506266 is 6626050431.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 502051 + ... + 504713.

It is an arithmetic number, because the mean of its divisors is an integer number (47472480).

Almost surely, 2^1340506266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340506266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519119360).

1340506266 is an abundant number, since it is smaller than the sum of its proper divisors (1697732454).

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

1340506266 is a wasteful number, since it uses less digits than its factorization.

1340506266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1340506266 is about 36612.9248490202. The cubic root of 1340506266 is about 1102.6125960045.

Adding to 1340506266 its reverse (6626050431), we get a palindrome (7966556697).

The spelling of 1340506266 in words is "one billion, three hundred forty million, five hundred six thousand, two hundred sixty-six".