1340334220 has 12 divisors (see below), whose sum is σ = 2814701904. Its totient is φ = 536133680.

The previous prime is 1340334187. The next prime is 1340334221. The reversal of 1340334220 is 224330431.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1340334191 and 1340334200.

It is not an unprimeable number, because it can be changed into a prime (1340334221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33508336 + ... + 33508375.

It is an arithmetic number, because the mean of its divisors is an integer number (234558492).

Almost surely, 2^1340334220 is an apocalyptic number.

1340334220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340334220 is an abundant number, since it is smaller than the sum of its proper divisors (1474367684).

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

1340334220 is a wasteful number, since it uses less digits than its factorization.

1340334220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67016720 (or 67016718 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1340334220 is about 36610.5752481438. The cubic root of 1340334220 is about 1102.5654227318.

Adding to 1340334220 its reverse (224330431), we get a palindrome (1564664651).

The spelling of 1340334220 in words is "one billion, three hundred forty million, three hundred thirty-four thousand, two hundred twenty".