199722672 has 70 divisors (see below), whose sum is σ = 580212492. Its totient is φ = 66570336.

The previous prime is 199722643. The next prime is 199722673. The reversal of 199722672 is 276227991.

It is not an unprimeable number, because it can be changed into a prime (199722673) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 3103 + ... + 20225.

Almost surely, 2^199722672 is an apocalyptic number.

199722672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199722672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290106246).

199722672 is an abundant number, since it is smaller than the sum of its proper divisors (380489820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199722672 is an equidigital number, since it uses as much as digits as its factorization.

199722672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17149 (or 17128 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 199722672 is about 14132.3271968915. The cubic root of 199722672 is about 584.5331186110.

The spelling of 199722672 in words is "one hundred ninety-nine million, seven hundred twenty-two thousand, six hundred seventy-two".