172293641 has 24 divisors (see below), whose sum is σ = 192580416. Its totient is φ = 154015680.

The previous prime is 172293637. The next prime is 172293643. The reversal of 172293641 is 146392271.

It is not a de Polignac number, because 172293641 - 2² = 172293637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172293643) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 995831 + ... + 996003.

It is an arithmetic number, because the mean of its divisors is an integer number (8024184).

Almost surely, 2^172293641 is an apocalyptic number.

It is an amenable number.

172293641 is a deficient number, since it is larger than the sum of its proper divisors (20286775).

172293641 is a wasteful number, since it uses less digits than its factorization.

172293641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 340 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 172293641 is about 13126.0672328005. The cubic root of 172293641 is about 556.4460744447.

The spelling of 172293641 in words is "one hundred seventy-two million, two hundred ninety-three thousand, six hundred forty-one".