204453378 has 12 divisors (see below), whose sum is σ = 442982358. Its totient is φ = 68151120.

The previous prime is 204453377. The next prime is 204453397. The reversal of 204453378 is 873354402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 114639849 + 89813529 = 10707^2 + 9477^2 .

It is a super-2 number, since 2×204453378² = 83602367551221768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204453377) 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 5 ways as a sum of consecutive naturals, for example, 5679243 + ... + 5679278.

Almost surely, 2^204453378 is an apocalyptic number.

204453378 is an abundant number, since it is smaller than the sum of its proper divisors (238528980).

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

204453378 is a wasteful number, since it uses less digits than its factorization.

204453378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11358529 (or 11358526 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 204453378 is about 14298.7194531538. The cubic root of 204453378 is about 589.1123086726.

The spelling of 204453378 in words is "two hundred four million, four hundred fifty-three thousand, three hundred seventy-eight".