147223138 has 16 divisors (see below), whose sum is σ = 230916096. Its totient is φ = 70264480.

The previous prime is 147223133. The next prime is 147223163. The reversal of 147223138 is 831322741.

It is not an unprimeable number, because it can be changed into a prime (147223133) 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, 20895 + ... + 27037.

It is an arithmetic number, because the mean of its divisors is an integer number (14432256).

Almost surely, 2^147223138 is an apocalyptic number.

147223138 is a deficient number, since it is larger than the sum of its proper divisors (83692958).

147223138 is a wasteful number, since it uses less digits than its factorization.

147223138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689.

The product of its digits is 8064, while the sum is 31.

The square root of 147223138 is about 12133.5542196011. The cubic root of 147223138 is about 528.0301123973.

Adding to 147223138 its reverse (831322741), we get a palindrome (978545879).

The spelling of 147223138 in words is "one hundred forty-seven million, two hundred twenty-three thousand, one hundred thirty-eight".