140784 has 40 divisors (see below), whose sum is σ = 416640. Its totient is φ = 40128.

The previous prime is 140779. The next prime is 140797. The reversal of 140784 is 487041.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

140784 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 7 ways as a sum of consecutive naturals, for example, 127 + ... + 545.

It is an arithmetic number, because the mean of its divisors is an integer number (10416).

2¹⁴⁰⁷⁸⁴ is an apocalyptic number.

140784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208320).

140784 is an abundant number, since it is smaller than the sum of its proper divisors (275856).

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

140784 is a wasteful number, since it uses less digits than its factorization.

140784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 140784 is about 375.2119401085. The cubic root of 140784 is about 52.0216872063.

The spelling of 140784 in words is "one hundred forty thousand, seven hundred eighty-four".