172683427 has 4 divisors (see below), whose sum is σ = 197352496. Its totient is φ = 148014360.

The previous prime is 172683373. The next prime is 172683439. The reversal of 172683427 is 724386271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724386271 = 7 ⋅103483753.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172683427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172683427.

It is not an unprimeable number, because it can be changed into a prime (172683827) 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 3 ways as a sum of consecutive naturals, for example, 12334524 + ... + 12334537.

It is an arithmetic number, because the mean of its divisors is an integer number (49338124).

Almost surely, 2^172683427 is an apocalyptic number.

172683427 is a deficient number, since it is larger than the sum of its proper divisors (24669069).

172683427 is an equidigital number, since it uses as much as digits as its factorization.

172683427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24669068.

The product of its digits is 112896, while the sum is 40.

The square root of 172683427 is about 13140.9066277788. The cubic root of 172683427 is about 556.8653809468.

The spelling of 172683427 in words is "one hundred seventy-two million, six hundred eighty-three thousand, four hundred twenty-seven".