140340328 has 8 divisors (see below), whose sum is σ = 263138130. Its totient is φ = 70170160.

The previous prime is 140340323. The next prime is 140340329. The reversal of 140340328 is 823043041.

It can be written as a sum of positive squares in only one way, i.e., 139759684 + 580644 = 11822^2 + 762^2 .

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 (140340323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8771263 + ... + 8771278.

Almost surely, 2^140340328 is an apocalyptic number.

It is an amenable number.

140340328 is a deficient number, since it is larger than the sum of its proper divisors (122797802).

140340328 is a wasteful number, since it uses less digits than its factorization.

140340328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17542547 (or 17542543 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 140340328 is about 11846.5323196284. The cubic root of 140340328 is about 519.6698199785.

Adding to 140340328 its reverse (823043041), we get a palindrome (963383369).

The spelling of 140340328 in words is "one hundred forty million, three hundred forty thousand, three hundred twenty-eight".