147728138 has 8 divisors (see below), whose sum is σ = 224713440. Its totient is φ = 72823660.

The previous prime is 147728123. The next prime is 147728167. The reversal of 147728138 is 831827741.

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

It is a junction number, because it is equal to n+sod(n) for n = 147728095 and 147728104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520028 + ... + 520311.

It is an arithmetic number, because the mean of its divisors is an integer number (28089180).

Almost surely, 2^147728138 is an apocalyptic number.

147728138 is a deficient number, since it is larger than the sum of its proper divisors (76985302).

147728138 is a wasteful number, since it uses less digits than its factorization.

147728138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040412.

The product of its digits is 75264, while the sum is 41.

The square root of 147728138 is about 12154.3464653596. The cubic root of 147728138 is about 528.6331672780.

The spelling of 147728138 in words is "one hundred forty-seven million, seven hundred twenty-eight thousand, one hundred thirty-eight".