172644122 has 8 divisors (see below), whose sum is σ = 295961376. Its totient is φ = 73990332.

The previous prime is 172644107. The next prime is 172644133. The reversal of 172644122 is 221446271.

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

It is a super-2 number, since 2×172644122² = 59611985722301768, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 6165848 + ... + 6165875.

It is an arithmetic number, because the mean of its divisors is an integer number (36995172).

Almost surely, 2^172644122 is an apocalyptic number.

172644122 is a deficient number, since it is larger than the sum of its proper divisors (123317254).

172644122 is a wasteful number, since it uses less digits than its factorization.

172644122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12331732.

The product of its digits is 5376, while the sum is 29.

The square root of 172644122 is about 13139.4110218076. The cubic root of 172644122 is about 556.8231277999.

The spelling of 172644122 in words is "one hundred seventy-two million, six hundred forty-four thousand, one hundred twenty-two".