140528 has 10 divisors (see below), whose sum is σ = 272304. Its totient is φ = 70256.

The previous prime is 140527. The next prime is 140533. The reversal of 140528 is 825041.

It is a nialpdrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 140528.

It is not an unprimeable number, because it can be changed into a prime (140521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4376 + ... + 4407.

140528 is a Friedman number, since it can be written as 52^(4-1)-80, using all its digits and the basic arithmetic operations.

2¹⁴⁰⁵²⁸ is an apocalyptic number.

It is an amenable number.

140528 is a deficient number, since it is larger than the sum of its proper divisors (131776).

140528 is an equidigital number, since it uses as much as digits as its factorization.

140528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8791 (or 8785 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 140528 is about 374.8706443562. The cubic root of 140528 is about 51.9901361961.

Adding to 140528 its reverse (825041), we get a palindrome (965569).

It can be divided in two parts, 1405 and 28, that multiplied together give a triangular number (39340 = T₂₈₀).

The spelling of 140528 in words is "one hundred forty thousand, five hundred twenty-eight".