140528685 has 16 divisors (see below), whose sum is σ = 245286720. Its totient is φ = 68135040.

The previous prime is 140528683. The next prime is 140528699. The reversal of 140528685 is 586825041.

It is not a de Polignac number, because 140528685 - 2¹ = 140528683 is a prime.

It is a super-2 number, since 2×140528685² = 39496622615658450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140528683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425680 + ... + 426009.

It is an arithmetic number, because the mean of its divisors is an integer number (15330420).

Almost surely, 2^140528685 is an apocalyptic number.

140528685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140528685 is a deficient number, since it is larger than the sum of its proper divisors (104758035).

140528685 is a wasteful number, since it uses less digits than its factorization.

140528685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851708.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 140528685 is about 11854.4795330710. The cubic root of 140528685 is about 519.9022067084.

It can be divided in two parts, 140 and 528685, that added together give a palindrome (528825).

The spelling of 140528685 in words is "one hundred forty million, five hundred twenty-eight thousand, six hundred eighty-five".