2172299926 has 16 divisors (see below), whose sum is σ = 3383004240. Its totient is φ = 1044902880.

The previous prime is 2172299911. The next prime is 2172299939. The reversal of 2172299926 is 6299922712.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 2172299926.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51540 + ... + 83671.

It is an arithmetic number, because the mean of its divisors is an integer number (211437765).

Almost surely, 2^2172299926 is an apocalyptic number.

2172299926 is a deficient number, since it is larger than the sum of its proper divisors (1210704314).

2172299926 is a wasteful number, since it uses less digits than its factorization.

2172299926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135519.

The product of its digits is 489888, while the sum is 49.

The square root of 2172299926 is about 46607.9384440033. The cubic root of 2172299926 is about 1295.1098183083.

The spelling of 2172299926 in words is "two billion, one hundred seventy-two million, two hundred ninety-nine thousand, nine hundred twenty-six".