428827566 has 16 divisors (see below), whose sum is σ = 858009600. Its totient is φ = 142883448.

The previous prime is 428827561. The next prime is 428827573. The reversal of 428827566 is 665728824.

It is a super-2 number, since 2×428827566² = 367786162722968712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428827561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2515 + ... + 29393.

It is an arithmetic number, because the mean of its divisors is an integer number (53625600).

Almost surely, 2^428827566 is an apocalyptic number.

428827566 is an abundant number, since it is smaller than the sum of its proper divisors (429182034).

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

428827566 is a wasteful number, since it uses less digits than its factorization.

428827566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29543.

The product of its digits is 1290240, while the sum is 48.

The square root of 428827566 is about 20708.1521628561. The cubic root of 428827566 is about 754.0976111179.

The spelling of 428827566 in words is "four hundred twenty-eight million, eight hundred twenty-seven thousand, five hundred sixty-six".