428874666 has 16 divisors (see below), whose sum is σ = 935726688. Its totient is φ = 129962000.

The previous prime is 428874653. The next prime is 428874697. The reversal of 428874666 is 666478824.

It is a super-2 number, since 2×428874666² = 367866958273223112, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3248985 + ... + 3249116.

It is an arithmetic number, because the mean of its divisors is an integer number (58482918).

Almost surely, 2^428874666 is an apocalyptic number.

428874666 is an abundant number, since it is smaller than the sum of its proper divisors (506852022).

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

428874666 is a wasteful number, since it uses less digits than its factorization.

428874666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6498117.

The product of its digits is 3096576, while the sum is 51.

The square root of 428874666 is about 20709.2893649203. The cubic root of 428874666 is about 754.1252187159.

The spelling of 428874666 in words is "four hundred twenty-eight million, eight hundred seventy-four thousand, six hundred sixty-six".