428213588 has 12 divisors (see below), whose sum is σ = 817498752. Its totient is φ = 194642520.

The previous prime is 428213537. The next prime is 428213603. The reversal of 428213588 is 885312824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4866020 + ... + 4866107.

It is an arithmetic number, because the mean of its divisors is an integer number (68124896).

Almost surely, 2^428213588 is an apocalyptic number.

It is an amenable number.

428213588 is a deficient number, since it is larger than the sum of its proper divisors (389285164).

428213588 is a wasteful number, since it uses less digits than its factorization.

428213588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9732142 (or 9732140 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 428213588 is about 20693.3223045503. The cubic root of 428213588 is about 753.7375437127.

The spelling of 428213588 in words is "four hundred twenty-eight million, two hundred thirteen thousand, five hundred eighty-eight".