199492254 has 128 divisors (see below), whose sum is σ = 503193600. Its totient is φ = 58164480.

The previous prime is 199492253. The next prime is 199492259. The reversal of 199492254 is 452294991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199492253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1936767 + ... + 1936869.

It is an arithmetic number, because the mean of its divisors is an integer number (3931200).

Almost surely, 2^199492254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199492254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251596800).

199492254 is an abundant number, since it is smaller than the sum of its proper divisors (303701346).

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

199492254 is a wasteful number, since it uses less digits than its factorization.

199492254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 241 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 199492254 is about 14124.1726837362. The cubic root of 199492254 is about 584.3082421533.

The spelling of 199492254 in words is "one hundred ninety-nine million, four hundred ninety-two thousand, two hundred fifty-four".