2172867244 has 12 divisors (see below), whose sum is σ = 3856074768. Its totient is φ = 1071131600.

The previous prime is 2172867241. The next prime is 2172867259. The reversal of 2172867244 is 4427682712.

It is a self number, because there is not a number n which added to its sum of digits gives 2172867244.

It is not an unprimeable number, because it can be changed into a prime (2172867241) 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, 3825187 + ... + 3825754.

It is an arithmetic number, because the mean of its divisors is an integer number (321339564).

Almost surely, 2^2172867244 is an apocalyptic number.

It is an amenable number.

2172867244 is a deficient number, since it is larger than the sum of its proper divisors (1683207524).

2172867244 is a wasteful number, since it uses less digits than its factorization.

2172867244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7651016 (or 7651014 counting only the distinct ones).

The product of its digits is 301056, while the sum is 43.

The square root of 2172867244 is about 46614.0241129212. The cubic root of 2172867244 is about 1295.2225521518. Note that the first 3 decimals are identical.

The spelling of 2172867244 in words is "two billion, one hundred seventy-two million, eight hundred sixty-seven thousand, two hundred forty-four".