172226887 has 8 divisors (see below), whose sum is σ = 207190400. Its totient is φ = 139853304.

The previous prime is 172226797. The next prime is 172226893. The reversal of 172226887 is 788622271.

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

It is a cyclic number.

It is not a de Polignac number, because 172226887 - 2¹¹ = 172224839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172226287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647337 + ... + 647602.

It is an arithmetic number, because the mean of its divisors is an integer number (25898800).

Almost surely, 2^172226887 is an apocalyptic number.

172226887 is a deficient number, since it is larger than the sum of its proper divisors (34963513).

172226887 is a wasteful number, since it uses less digits than its factorization.

172226887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294965.

The product of its digits is 150528, while the sum is 43.

The square root of 172226887 is about 13123.5241836940. The cubic root of 172226887 is about 556.3742014120.

The spelling of 172226887 in words is "one hundred seventy-two million, two hundred twenty-six thousand, eight hundred eighty-seven".