428159826 has 12 divisors (see below), whose sum is σ = 927679662. Its totient is φ = 142719936.

The previous prime is 428159791. The next prime is 428159827. The reversal of 428159826 is 628951824.

It can be written as a sum of positive squares in only one way, i.e., 365765625 + 62394201 = 19125^2 + 7899^2 .

It is not an unprimeable number, because it can be changed into a prime (428159827) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 11893311 + ... + 11893346.

Almost surely, 2^428159826 is an apocalyptic number.

428159826 is an abundant number, since it is smaller than the sum of its proper divisors (499519836).

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

428159826 is a wasteful number, since it uses less digits than its factorization.

428159826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23786665 (or 23786662 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 428159826 is about 20692.0232456858. The cubic root of 428159826 is about 753.7059986030.

The spelling of 428159826 in words is "four hundred twenty-eight million, one hundred fifty-nine thousand, eight hundred twenty-six".