140388 has 12 divisors (see below), whose sum is σ = 327600. Its totient is φ = 46792.

The previous prime is 140381. The next prime is 140401. The reversal of 140388 is 883041.

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

It is not an unprimeable number, because it can be changed into a prime (140381) by changing a digit.

140388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5838 + ... + 5861.

It is an arithmetic number, because the mean of its divisors is an integer number (27300).

2¹⁴⁰³⁸⁸ is an apocalyptic number.

It is an amenable number.

140388 is an abundant number, since it is smaller than the sum of its proper divisors (187212).

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

140388 is a wasteful number, since it uses less digits than its factorization.

140388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11706 (or 11704 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 140388 is about 374.6838667464. The cubic root of 140388 is about 51.9728655277.

It can be divided in two parts, 140 and 388, that added together give a triangular number (528 = T₃₂).

The spelling of 140388 in words is "one hundred forty thousand, three hundred eighty-eight".