428164878 has 16 divisors (see below), whose sum is σ = 857857536. Its totient is φ = 142467000.

The previous prime is 428164853. The next prime is 428164931. The reversal of 428164878 is 878461824.

It is a Curzon number.

It is a congruent number.

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, 59998 + ... + 66753.

It is an arithmetic number, because the mean of its divisors is an integer number (53616096).

Almost surely, 2^428164878 is an apocalyptic number.

428164878 is an abundant number, since it is smaller than the sum of its proper divisors (429692658).

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

428164878 is a wasteful number, since it uses less digits than its factorization.

428164878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127319.

The product of its digits is 688128, while the sum is 48.

The square root of 428164878 is about 20692.1453213532. The cubic root of 428164878 is about 753.7089630005.

The spelling of 428164878 in words is "four hundred twenty-eight million, one hundred sixty-four thousand, eight hundred seventy-eight".