147728897 has 4 divisors (see below), whose sum is σ = 147873216. Its totient is φ = 147584580.

The previous prime is 147728891. The next prime is 147728909. The reversal of 147728897 is 798827741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 147728897 - 2¹⁶ = 147663361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147728891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70613 + ... + 72674.

It is an arithmetic number, because the mean of its divisors is an integer number (36968304).

Almost surely, 2^147728897 is an apocalyptic number.

It is an amenable number.

147728897 is a deficient number, since it is larger than the sum of its proper divisors (144319).

147728897 is a wasteful number, since it uses less digits than its factorization.

147728897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144318.

The product of its digits is 1580544, while the sum is 53.

The square root of 147728897 is about 12154.3776887178. The cubic root of 147728897 is about 528.6340726164.

The spelling of 147728897 in words is "one hundred forty-seven million, seven hundred twenty-eight thousand, eight hundred ninety-seven".