428588238 has 32 divisors (see below), whose sum is σ = 924327936. Its totient is φ = 131699808.

The previous prime is 428588231. The next prime is 428588239. The reversal of 428588238 is 832885824.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428588231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64131 + ... + 70497.

It is an arithmetic number, because the mean of its divisors is an integer number (28885248).

Almost surely, 2^428588238 is an apocalyptic number.

428588238 is an abundant number, since it is smaller than the sum of its proper divisors (495739698).

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

428588238 is a wasteful number, since it uses less digits than its factorization.

428588238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7248.

The product of its digits is 983040, while the sum is 48.

The square root of 428588238 is about 20702.3727625603. The cubic root of 428588238 is about 753.9572981091.

The spelling of 428588238 in words is "four hundred twenty-eight million, five hundred eighty-eight thousand, two hundred thirty-eight".