2173928347 has 4 divisors (see below), whose sum is σ = 2175032160. Its totient is φ = 2172824536.

The previous prime is 2173928321. The next prime is 2173928353. The reversal of 2173928347 is 7438293712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2173928347 - 2¹¹ = 2173926299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2173928297 and 2173928306.

It is not an unprimeable number, because it can be changed into a prime (2173928357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548947 + ... + 552892.

It is an arithmetic number, because the mean of its divisors is an integer number (543758040).

Almost surely, 2^2173928347 is an apocalyptic number.

2173928347 is a deficient number, since it is larger than the sum of its proper divisors (1103813).

2173928347 is a wasteful number, since it uses less digits than its factorization.

2173928347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103812.

The product of its digits is 508032, while the sum is 46.

The square root of 2173928347 is about 46625.4045237143. The cubic root of 2173928347 is about 1295.4333551633.

It can be divided in two parts, 21739 and 28347, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 2173928347 in words is "two billion, one hundred seventy-three million, nine hundred twenty-eight thousand, three hundred forty-seven".