148728209 has 8 divisors (see below), whose sum is σ = 171019200. Its totient is φ = 126698256.

The previous prime is 148728191. The next prime is 148728247. The reversal of 148728209 is 902827841.

148728209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148728209 - 2¹² = 148724113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148728259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64034 + ... + 66315.

It is an arithmetic number, because the mean of its divisors is an integer number (21377400).

Almost surely, 2^148728209 is an apocalyptic number.

It is an amenable number.

148728209 is a deficient number, since it is larger than the sum of its proper divisors (22290991).

148728209 is a wasteful number, since it uses less digits than its factorization.

148728209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130519.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 148728209 is about 12195.4175410274. The cubic root of 148728209 is about 529.8233765327.

The spelling of 148728209 in words is "one hundred forty-eight million, seven hundred twenty-eight thousand, two hundred nine".