140549728 has 36 divisors (see below), whose sum is σ = 304157700. Its totient is φ = 63884480.

The previous prime is 140549701. The next prime is 140549729. The reversal of 140549728 is 827945041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140549729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14278 + ... + 22021.

It is an arithmetic number, because the mean of its divisors is an integer number (8448825).

Almost surely, 2^140549728 is an apocalyptic number.

It is an amenable number.

140549728 is an abundant number, since it is smaller than the sum of its proper divisors (163607972).

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

140549728 is a wasteful number, since it uses less digits than its factorization.

140549728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36331 (or 36312 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 140549728 is about 11855.3670546297. The cubic root of 140549728 is about 519.9281557548.

The spelling of 140549728 in words is "one hundred forty million, five hundred forty-nine thousand, seven hundred twenty-eight".