1340624238 has 16 divisors (see below), whose sum is σ = 2773705680. Its totient is φ = 431465216.

The previous prime is 1340624237. The next prime is 1340624251. The reversal of 1340624238 is 8324260431.

It is a junction number, because it is equal to n+sod(n) for n = 1340624199 and 1340624208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340624237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3852195 + ... + 3852542.

It is an arithmetic number, because the mean of its divisors is an integer number (173356605).

Almost surely, 2^1340624238 is an apocalyptic number.

1340624238 is an abundant number, since it is smaller than the sum of its proper divisors (1433081442).

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

1340624238 is a wasteful number, since it uses less digits than its factorization.

1340624238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7704771.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 1340624238 is about 36614.5358839901. The cubic root of 1340624238 is about 1102.6449404007.

Adding to 1340624238 its reverse (8324260431), we get a palindrome (9664884669).

The spelling of 1340624238 in words is "one billion, three hundred forty million, six hundred twenty-four thousand, two hundred thirty-eight".