1340688232 has 16 divisors (see below), whose sum is σ = 2707159140. Its totient is φ = 618779136.

The previous prime is 1340688197. The next prime is 1340688247. The reversal of 1340688232 is 2328860431.

It can be written as a sum of positive squares in 2 ways, for example, as 1039804516 + 300883716 = 32246^2 + 17346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1340688191 and 1340688200.

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, 6445513 + ... + 6445720.

Almost surely, 2^1340688232 is an apocalyptic number.

It is an amenable number.

1340688232 is an abundant number, since it is smaller than the sum of its proper divisors (1366470908).

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

1340688232 is a wasteful number, since it uses less digits than its factorization.

1340688232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891252 (or 12891248 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 1340688232 is about 36615.4097614652. The cubic root of 1340688232 is about 1102.6624848490.

The spelling of 1340688232 in words is "one billion, three hundred forty million, six hundred eighty-eight thousand, two hundred thirty-two".