145728565 has 16 divisors (see below), whose sum is σ = 177914880. Its totient is φ = 114567040.

The previous prime is 145728559. The next prime is 145728581. The reversal of 145728565 is 565827541.

145728565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145728565 - 2²⁵ = 112174133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169617 + ... + 170473.

It is an arithmetic number, because the mean of its divisors is an integer number (11119680).

Almost surely, 2^145728565 is an apocalyptic number.

It is an amenable number.

145728565 is a deficient number, since it is larger than the sum of its proper divisors (32186315).

145728565 is an equidigital number, since it uses as much as digits as its factorization.

145728565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412.

The product of its digits is 336000, while the sum is 43.

The square root of 145728565 is about 12071.8086880136. The cubic root of 145728565 is about 526.2372211377.

The spelling of 145728565 in words is "one hundred forty-five million, seven hundred twenty-eight thousand, five hundred sixty-five".