145728205 has 24 divisors (see below), whose sum is σ = 204461280. Its totient is φ = 99419040.

The previous prime is 145728203. The next prime is 145728223. The reversal of 145728205 is 502827541.

It is a happy number.

It is not a de Polignac number, because 145728205 - 2¹ = 145728203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145728203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50286 + ... + 53104.

It is an arithmetic number, because the mean of its divisors is an integer number (8519220).

Almost surely, 2^145728205 is an apocalyptic number.

It is an amenable number.

145728205 is a deficient number, since it is larger than the sum of its proper divisors (58733075).

145728205 is a wasteful number, since it uses less digits than its factorization.

145728205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 145728205 is about 12071.7937772313. The cubic root of 145728205 is about 526.2367878080.

The spelling of 145728205 in words is "one hundred forty-five million, seven hundred twenty-eight thousand, two hundred five".