340144456 has 8 divisors (see below), whose sum is σ = 637770870. Its totient is φ = 170072224.

The previous prime is 340144423. The next prime is 340144459. The reversal of 340144456 is 654441043.

It can be written as a sum of positive squares in only one way, i.e., 326380356 + 13764100 = 18066^2 + 3710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (340144459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21259021 + ... + 21259036.

Almost surely, 2^340144456 is an apocalyptic number.

It is an amenable number.

340144456 is a deficient number, since it is larger than the sum of its proper divisors (297626414).

340144456 is a wasteful number, since it uses less digits than its factorization.

340144456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42518063 (or 42518059 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 340144456 is about 18443.0056118844. The cubic root of 340144456 is about 698.0520372914.

Adding to 340144456 its reverse (654441043), we get a palindrome (994585499).

The spelling of 340144456 in words is "three hundred forty million, one hundred forty-four thousand, four hundred fifty-six".