428825478 has 64 divisors (see below), whose sum is σ = 965260800. Its totient is φ = 126339840.

The previous prime is 428825429. The next prime is 428825479. The reversal of 428825478 is 874528824.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428825479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105508 + ... + 109496.

It is an arithmetic number, because the mean of its divisors is an integer number (15082200).

Almost surely, 2^428825478 is an apocalyptic number.

428825478 is an abundant number, since it is smaller than the sum of its proper divisors (536435322).

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

428825478 is a wasteful number, since it uses less digits than its factorization.

428825478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077.

The product of its digits is 1146880, while the sum is 48.

The square root of 428825478 is about 20708.1017478667. The cubic root of 428825478 is about 754.0963871929.

The spelling of 428825478 in words is "four hundred twenty-eight million, eight hundred twenty-five thousand, four hundred seventy-eight".