147661972 has 12 divisors (see below), whose sum is σ = 259837396. Its totient is φ = 73422720.

The previous prime is 147661967. The next prime is 147661979. The reversal of 147661972 is 279166741.

It can be written as a sum of positive squares in 2 ways, for example, as 62948356 + 84713616 = 7934^2 + 9204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147661979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101253 + ... + 102700.

Almost surely, 2^147661972 is an apocalyptic number.

It is an amenable number.

147661972 is a deficient number, since it is larger than the sum of its proper divisors (112175424).

147661972 is a wasteful number, since it uses less digits than its factorization.

147661972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204138 (or 204136 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 147661972 is about 12151.6242535720. The cubic root of 147661972 is about 528.5542322695.

The spelling of 147661972 in words is "one hundred forty-seven million, six hundred sixty-one thousand, nine hundred seventy-two".