204111378 has 24 divisors (see below), whose sum is σ = 456508416. Its totient is φ = 65842200.

The previous prime is 204111343. The next prime is 204111379. The reversal of 204111378 is 873111402.

It is a super-2 number, since 2×204111378² = 83322909258117768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204111379) 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 11 ways as a sum of consecutive naturals, for example, 182338 + ... + 183453.

It is an arithmetic number, because the mean of its divisors is an integer number (19021184).

Almost surely, 2^204111378 is an apocalyptic number.

204111378 is an abundant number, since it is smaller than the sum of its proper divisors (252397038).

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

204111378 is a wasteful number, since it uses less digits than its factorization.

204111378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365830 (or 365827 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 204111378 is about 14286.7553349247. The cubic root of 204111378 is about 588.7836455545.

The spelling of 204111378 in words is "two hundred four million, one hundred eleven thousand, three hundred seventy-eight".