1340303400 has 144 divisors (see below), whose sum is σ = 4543905600. Its totient is φ = 354023040.

The previous prime is 1340303389. The next prime is 1340303401. The reversal of 1340303400 is 43030431.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1340303401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 189121 + ... + 196079.

It is an arithmetic number, because the mean of its divisors is an integer number (31554900).

Almost surely, 2^1340303400 is an apocalyptic number.

1340303400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340303400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2271952800).

1340303400 is an abundant number, since it is smaller than the sum of its proper divisors (3203602200).

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

1340303400 is a wasteful number, since it uses less digits than its factorization.

1340303400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7088 (or 7076 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 1340303400 is about 36610.1543290929. The cubic root of 1340303400 is about 1102.5569717733.

Adding to 1340303400 its reverse (43030431), we get a palindrome (1383333831).

It can be divided in two parts, 1340303 and 400, that added together give a triangular number (1340703 = T₁₆₃₇).

The spelling of 1340303400 in words is "one billion, three hundred forty million, three hundred three thousand, four hundred".