428042266 has 8 divisors (see below), whose sum is σ = 642254580. Its totient is φ = 213957408.

The previous prime is 428042261. The next prime is 428042273. The reversal of 428042266 is 662240824.

It can be written as a sum of positive squares in 2 ways, for example, as 420865225 + 7177041 = 20515^2 + 2679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (428042261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22971 + ... + 37198.

Almost surely, 2^428042266 is an apocalyptic number.

428042266 is a deficient number, since it is larger than the sum of its proper divisors (214212314).

428042266 is a wasteful number, since it uses less digits than its factorization.

428042266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63728.

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 428042266 is about 20689.1823424707. The cubic root of 428042266 is about 753.6370105113.

The spelling of 428042266 in words is "four hundred twenty-eight million, forty-two thousand, two hundred sixty-six".