158347172 has 6 divisors (see below), whose sum is σ = 277107558. Its totient is φ = 79173584.

The previous prime is 158347169. The next prime is 158347181. The reversal of 158347172 is 271743851.

158347172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 148449856 + 9897316 = 12184^2 + 3146^2 .

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 as a sum of consecutive naturals, namely, 19793393 + ... + 19793400.

It is an arithmetic number, because the mean of its divisors is an integer number (46184593).

Almost surely, 2^158347172 is an apocalyptic number.

It is an amenable number.

158347172 is a deficient number, since it is larger than the sum of its proper divisors (118760386).

158347172 is a wasteful number, since it uses less digits than its factorization.

158347172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39586797 (or 39586795 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 158347172 is about 12583.6072729564. The cubic root of 158347172 is about 541.0076885802.

The spelling of 158347172 in words is "one hundred fifty-eight million, three hundred forty-seven thousand, one hundred seventy-two".