428832266 has 4 divisors (see below), whose sum is σ = 643248402. Its totient is φ = 214416132.

The previous prime is 428832241. The next prime is 428832307. The reversal of 428832266 is 662238824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 383337241 + 45495025 = 19579^2 + 6745^2 .

It is a super-2 number, since 2×428832266² = 367794224725389512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107208065 + ... + 107208068.

Almost surely, 2^428832266 is an apocalyptic number.

428832266 is a deficient number, since it is larger than the sum of its proper divisors (214416136).

428832266 is a wasteful number, since it uses less digits than its factorization.

428832266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214416135.

The product of its digits is 221184, while the sum is 41.

The square root of 428832266 is about 20708.2656444232. The cubic root of 428832266 is about 754.1003661070.

The spelling of 428832266 in words is "four hundred twenty-eight million, eight hundred thirty-two thousand, two hundred sixty-six".