1344012340 has 72 divisors (see below), whose sum is σ = 3115848456. Its totient is φ = 486604800.

The previous prime is 1344012331. The next prime is 1344012379. The reversal of 1344012340 is 432104431.

It can be written as a sum of positive squares in 4 ways, for example, as 579268624 + 764743716 = 24068^2 + 27654^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 620860 + ... + 623020.

It is an arithmetic number, because the mean of its divisors is an integer number (43275673).

Almost surely, 2^1344012340 is an apocalyptic number.

1344012340 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 1344012340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1557924228).

1344012340 is an abundant number, since it is smaller than the sum of its proper divisors (1771836116).

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

1344012340 is a wasteful number, since it uses less digits than its factorization.

1344012340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1344012340 is about 36660.7738598083. The cubic root of 1344012340 is about 1103.5730480346.

Adding to 1344012340 its reverse (432104431), we get a palindrome (1776116771).

The spelling of 1344012340 in words is "one billion, three hundred forty-four million, twelve thousand, three hundred forty".