268228404 has 18 divisors (see below), whose sum is σ = 678021890. Its totient is φ = 89409456.

The previous prime is 268228393. The next prime is 268228417. The reversal of 268228404 is 404822862.

It is a happy number.

268228404 is a `hidden beast` number, since 26 + 8 + 228 + 404 = 666.

It can be written as a sum of positive squares in only one way, i.e., 200165904 + 68062500 = 14148^2 + 8250^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7450789 = 268228404 / (2 + 6 + 8 + 2 + 2 + 8 + 4 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3725359 + ... + 3725430.

Almost surely, 2^268228404 is an apocalyptic number.

It is an amenable number.

268228404 is an abundant number, since it is smaller than the sum of its proper divisors (409793486).

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

268228404 is a wasteful number, since it uses less digits than its factorization.

268228404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7450799 (or 7450794 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 268228404 is about 16377.6800554902. The cubic root of 268228404 is about 644.9136787311.

The spelling of 268228404 in words is "two hundred sixty-eight million, two hundred twenty-eight thousand, four hundred four".