2173208 has 8 divisors (see below), whose sum is σ = 4074780. Its totient is φ = 1086600.

The previous prime is 2173207. The next prime is 2173219. The reversal of 2173208 is 8023712.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2173208² = 9445666022528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135818 + ... + 135833.

2^2173208 is an apocalyptic number.

It is an amenable number.

2173208 is a deficient number, since it is larger than the sum of its proper divisors (1901572).

2173208 is a wasteful number, since it uses less digits than its factorization.

2173208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271657 (or 271653 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2173208 is about 1474.1804502842. The cubic root of 2173208 is about 129.5290255596.

The spelling of 2173208 in words is "two million, one hundred seventy-three thousand, two hundred eight".