140028244 has 12 divisors (see below), whose sum is σ = 247218804. Its totient is φ = 69394304.

The previous prime is 140028227. The next prime is 140028257. The reversal of 140028244 is 442820041.

It can be written as a sum of positive squares in 2 ways, for example, as 1024144 + 139004100 = 1012^2 + 11790^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154447 + ... + 155350.

It is an arithmetic number, because the mean of its divisors is an integer number (20601567).

Almost surely, 2^140028244 is an apocalyptic number.

It is an amenable number.

140028244 is a deficient number, since it is larger than the sum of its proper divisors (107190560).

140028244 is a wasteful number, since it uses less digits than its factorization.

140028244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309914 (or 309912 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 140028244 is about 11833.3530328475. The cubic root of 140028244 is about 519.2843261237.

Adding to 140028244 its reverse (442820041), we get a palindrome (582848285).

The spelling of 140028244 in words is "one hundred forty million, twenty-eight thousand, two hundred forty-four".