140104728 has 40 divisors (see below), whose sum is σ = 392424780. Its totient is φ = 46701360.

The previous prime is 140104721. The next prime is 140104777. The reversal of 140104728 is 827401041.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140104721) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 107458 + ... + 108753.

Almost surely, 2^140104728 is an apocalyptic number.

140104728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

140104728 is an abundant number, since it is smaller than the sum of its proper divisors (252320052).

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

140104728 is a wasteful number, since it uses less digits than its factorization.

140104728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216229 (or 216216 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 140104728 is about 11836.5843046041. The cubic root of 140104728 is about 519.3788539901.

Adding to 140104728 its reverse (827401041), we get a palindrome (967505769).

The spelling of 140104728 in words is "one hundred forty million, one hundred four thousand, seven hundred twenty-eight".