147228237 has 18 divisors (see below), whose sum is σ = 230282442. Its totient is φ = 90601056.

The previous prime is 147228233. The next prime is 147228239. The reversal of 147228237 is 732822741.

It can be written as a sum of positive squares in 3 ways, for example, as 1929321 + 145298916 = 1389^2 + 12054^2 .

It is not a de Polignac number, because 147228237 - 2² = 147228233 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147228233) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 46878 + ... + 49919.

It is an arithmetic number, because the mean of its divisors is an integer number (12793469).

Almost surely, 2^147228237 is an apocalyptic number.

It is an amenable number.

147228237 is a deficient number, since it is larger than the sum of its proper divisors (83054205).

147228237 is a wasteful number, since it uses less digits than its factorization.

147228237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96829 (or 96813 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 147228237 is about 12133.7643375830. The cubic root of 147228237 is about 528.0362083468.

The spelling of 147228237 in words is "one hundred forty-seven million, two hundred twenty-eight thousand, two hundred thirty-seven".