147215218 has 8 divisors (see below), whose sum is σ = 227946240. Its totient is φ = 71233140.

The previous prime is 147215209. The next prime is 147215221. The reversal of 147215218 is 812512741.

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

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 147215218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187158 + ... + 1187281.

It is an arithmetic number, because the mean of its divisors is an integer number (28493280).

Almost surely, 2^147215218 is an apocalyptic number.

147215218 is a deficient number, since it is larger than the sum of its proper divisors (80731022).

147215218 is a wasteful number, since it uses less digits than its factorization.

147215218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374472.

The product of its digits is 4480, while the sum is 31.

The square root of 147215218 is about 12133.2278475268. The cubic root of 147215218 is about 528.0206436105.

Adding to 147215218 its reverse (812512741), we get a palindrome (959727959).

The spelling of 147215218 in words is "one hundred forty-seven million, two hundred fifteen thousand, two hundred eighteen".