140238528 has 56 divisors (see below), whose sum is σ = 374507760. Its totient is φ = 46310400.

The previous prime is 140238499. The next prime is 140238529. The reversal of 140238528 is 825832041.

140238528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (140238529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17578 + ... + 24278.

Almost surely, 2^140238528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140238528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187253880).

140238528 is an abundant number, since it is smaller than the sum of its proper divisors (234269232).

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

140238528 is a wasteful number, since it uses less digits than its factorization.

140238528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825 (or 6815 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 140238528 is about 11842.2349242024. The cubic root of 140238528 is about 519.5441369692.

The spelling of 140238528 in words is "one hundred forty million, two hundred thirty-eight thousand, five hundred twenty-eight".