428701788 has 96 divisors (see below), whose sum is σ = 1190112000. Its totient is φ = 133047360.

The previous prime is 428701783. The next prime is 428701799. The reversal of 428701788 is 887107824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428701783) 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, 119298 + ... + 122838.

It is an arithmetic number, because the mean of its divisors is an integer number (12397000).

Almost surely, 2^428701788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428701788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (595056000).

428701788 is an abundant number, since it is smaller than the sum of its proper divisors (761410212).

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

428701788 is a wasteful number, since it uses less digits than its factorization.

428701788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632 (or 3624 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The square root of 428701788 is about 20705.1150202070. The cubic root of 428701788 is about 754.0238766135.

The spelling of 428701788 in words is "four hundred twenty-eight million, seven hundred one thousand, seven hundred eighty-eight".