428885740 has 12 divisors (see below), whose sum is σ = 900660096. Its totient is φ = 171554288.

The previous prime is 428885729. The next prime is 428885773. The reversal of 428885740 is 47588824.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 10722124 + ... + 10722163.

It is an arithmetic number, because the mean of its divisors is an integer number (75055008).

Almost surely, 2^428885740 is an apocalyptic number.

It is an amenable number.

428885740 is an abundant number, since it is smaller than the sum of its proper divisors (471774356).

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

428885740 is a wasteful number, since it uses less digits than its factorization.

428885740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21444296 (or 21444294 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 46.

The square root of 428885740 is about 20709.5567311326. The cubic root of 428885740 is about 754.1317094318.

The spelling of 428885740 in words is "four hundred twenty-eight million, eight hundred eighty-five thousand, seven hundred forty".