173172426 has 16 divisors (see below), whose sum is σ = 395822784. Its totient is φ = 49477824.

The previous prime is 173172409. The next prime is 173172431. The reversal of 173172426 is 624271371.

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 7 ways as a sum of consecutive naturals, for example, 2061535 + ... + 2061618.

It is an arithmetic number, because the mean of its divisors is an integer number (24738924).

Almost surely, 2^173172426 is an apocalyptic number.

173172426 is an abundant number, since it is smaller than the sum of its proper divisors (222650358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

173172426 is a wasteful number, since it uses less digits than its factorization.

173172426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123165.

The product of its digits is 14112, while the sum is 33.

The square root of 173172426 is about 13159.4994585660. The cubic root of 173172426 is about 557.3905229877.

The spelling of 173172426 in words is "one hundred seventy-three million, one hundred seventy-two thousand, four hundred twenty-six".