145784 has 8 divisors (see below), whose sum is σ = 273360. Its totient is φ = 72888.

The previous prime is 145777. The next prime is 145799. The reversal of 145784 is 487541.

145784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9104 + ... + 9119.

It is an arithmetic number, because the mean of its divisors is an integer number (34170).

2¹⁴⁵⁷⁸⁴ is an apocalyptic number.

It is an amenable number.

145784 is a deficient number, since it is larger than the sum of its proper divisors (127576).

145784 is a wasteful number, since it uses less digits than its factorization.

145784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18229 (or 18225 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 145784 is about 381.8167099539. The cubic root of 145784 is about 52.6303939382.

It can be divided in two parts, 145 and 784, that added together give a palindrome (929).

The spelling of 145784 in words is "one hundred forty-five thousand, seven hundred eighty-four".