1340432400 has 60 divisors (see below), whose sum is σ = 4293855632. Its totient is φ = 357448320.

The previous prime is 1340432399. The next prime is 1340432413. The reversal of 1340432400 is 42340431.

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 557314 + ... + 559713.

Almost surely, 2^1340432400 is an apocalyptic number.

1340432400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340432400 is an abundant number, since it is smaller than the sum of its proper divisors (2953423232).

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

1340432400 is a wasteful number, since it uses less digits than its factorization.

1340432400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117048 (or 1117037 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1340432400 is about 36611.9160929881. The cubic root of 1340432400 is about 1102.5923431890.

Adding to 1340432400 its reverse (42340431), we get a palindrome (1382772831).

The spelling of 1340432400 in words is "one billion, three hundred forty million, four hundred thirty-two thousand, four hundred".