140440828 has 36 divisors (see below), whose sum is σ = 273639520. Its totient is φ = 63011520.

The previous prime is 140440801. The next prime is 140440871. The reversal of 140440828 is 828044041.

It is a self number, because there is not a number n which added to its sum of digits gives 140440828.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36400 + ... + 40072.

Almost surely, 2^140440828 is an apocalyptic number.

It is an amenable number.

140440828 is a deficient number, since it is larger than the sum of its proper divisors (133198692).

140440828 is a wasteful number, since it uses less digits than its factorization.

140440828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778 (or 3765 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 140440828 is about 11850.7733081010. The cubic root of 140440828 is about 519.7938383934.

Adding to 140440828 its reverse (828044041), we get a palindrome (968484869).

The spelling of 140440828 in words is "one hundred forty million, four hundred forty thousand, eight hundred twenty-eight".