199672980 has 96 divisors (see below), whose sum is σ = 604896768. Its totient is φ = 48921600.

The previous prime is 199672969. The next prime is 199672981. The reversal of 199672980 is 89276991.

It is a happy number.

199672980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199672981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218725 + ... + 219635.

It is an arithmetic number, because the mean of its divisors is an integer number (6301008).

Almost surely, 2^199672980 is an apocalyptic number.

199672980 is a gapful number since it is divisible by the number (10) 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 199672980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302448384).

199672980 is an abundant number, since it is smaller than the sum of its proper divisors (405223788).

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

199672980 is a wasteful number, since it uses less digits than its factorization.

199672980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 1215 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 199672980 is about 14130.5689906670. The cubic root of 199672980 is about 584.4846363352.

The spelling of 199672980 in words is "one hundred ninety-nine million, six hundred seventy-two thousand, nine hundred eighty".