1340873400 has 48 divisors (see below), whose sum is σ = 4156709400. Its totient is φ = 357566080.

The previous prime is 1340873393. The next prime is 1340873407. The reversal of 1340873400 is 43780431.

It is an interprime number because it is at equal distance from previous prime (1340873393) and next prime (1340873407).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340873407) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1116795 + ... + 1117994.

Almost surely, 2^1340873400 is an apocalyptic number.

1340873400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340873400 is an abundant number, since it is smaller than the sum of its proper divisors (2815836000).

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

1340873400 is a wasteful number, since it uses less digits than its factorization.

1340873400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234808 (or 2234799 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 1340873400 is about 36617.9382270493. The cubic root of 1340873400 is about 1102.7132469384.

The spelling of 1340873400 in words is "one billion, three hundred forty million, eight hundred seventy-three thousand, four hundred".