1340069340 has 24 divisors (see below), whose sum is σ = 3752194320. Its totient is φ = 357351808.

The previous prime is 1340069321. The next prime is 1340069363. The reversal of 1340069340 is 439600431.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1340069298 and 1340069307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11167185 + ... + 11167304.

It is an arithmetic number, because the mean of its divisors is an integer number (156341430).

Almost surely, 2^1340069340 is an apocalyptic number.

1340069340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340069340 is an abundant number, since it is smaller than the sum of its proper divisors (2412124980).

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

1340069340 is a wasteful number, since it uses less digits than its factorization.

1340069340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22334501 (or 22334499 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1340069340 is about 36606.9575354194. The cubic root of 1340069340 is about 1102.4927874231.

Adding to 1340069340 its reverse (439600431), we get a palindrome (1779669771).

The spelling of 1340069340 in words is "one billion, three hundred forty million, sixty-nine thousand, three hundred forty".