199026980 has 24 divisors (see below), whose sum is σ = 418332600. Its totient is φ = 79539200.

The previous prime is 199026979. The next prime is 199026983. The reversal of 199026980 is 89620991.

It can be written as a sum of positive squares in 4 ways, for example, as 21977344 + 177049636 = 4688^2 + 13306^2 .

It is a super-2 number, since 2×199026980² = 79223477535840800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199026983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22196 + ... + 29844.

It is an arithmetic number, because the mean of its divisors is an integer number (17430525).

Almost surely, 2^199026980 is an apocalyptic number.

199026980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199026980 is an abundant number, since it is smaller than the sum of its proper divisors (219305620).

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

199026980 is a wasteful number, since it uses less digits than its factorization.

199026980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8959 (or 8957 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 199026980 is about 14107.6922280010. The cubic root of 199026980 is about 583.8536295777.

The spelling of 199026980 in words is "one hundred ninety-nine million, twenty-six thousand, nine hundred eighty".