140628 has 12 divisors (see below), whose sum is σ = 328160. Its totient is φ = 46872.

The previous prime is 140627. The next prime is 140629. The reversal of 140628 is 826041.

It is an interprime number because it is at equal distance from previous prime (140627) and next prime (140629).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140627) 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 in 3 ways as a sum of consecutive naturals, for example, 5848 + ... + 5871.

2¹⁴⁰⁶²⁸ is an apocalyptic number.

It is an amenable number.

140628 is an abundant number, since it is smaller than the sum of its proper divisors (187532).

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

140628 is a wasteful number, since it uses less digits than its factorization.

140628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11726 (or 11724 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 140628 is about 375.0039999787. The cubic root of 140628 is about 52.0024653663.

Adding to 140628 its reverse (826041), we get a palindrome (966669).

The spelling of 140628 in words is "one hundred forty thousand, six hundred twenty-eight".