140033728 has 28 divisors (see below), whose sum is σ = 279925272. Its totient is φ = 69501440.

The previous prime is 140033723. The next prime is 140033731. The reversal of 140033728 is 827330041.

It is a junction number, because it is equal to n+sod(n) for n = 140033696 and 140033705.

It is not an unprimeable number, because it can be changed into a prime (140033723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783 + ... + 16753.

Almost surely, 2^140033728 is an apocalyptic number.

It is an amenable number.

140033728 is a deficient number, since it is larger than the sum of its proper divisors (139891544).

140033728 is a wasteful number, since it uses less digits than its factorization.

140033728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16120 (or 16110 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 140033728 is about 11833.5847485029. The cubic root of 140033728 is about 519.2911050372.

Adding to 140033728 its reverse (827330041), we get a palindrome (967363769).

The spelling of 140033728 in words is "one hundred forty million, thirty-three thousand, seven hundred twenty-eight".