428535618 has 32 divisors (see below), whose sum is σ = 994136064. Its totient is φ = 120610512.

The previous prime is 428535617. The next prime is 428535629. The reversal of 428535618 is 816535824.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 428535618.

It is not an unprimeable number, because it can be changed into a prime (428535617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73330 + ... + 78957.

It is an arithmetic number, because the mean of its divisors is an integer number (31066752).

Almost surely, 2^428535618 is an apocalyptic number.

428535618 is an abundant number, since it is smaller than the sum of its proper divisors (565600446).

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

428535618 is a wasteful number, since it uses less digits than its factorization.

428535618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152366.

The product of its digits is 230400, while the sum is 42.

The square root of 428535618 is about 20701.1018547323. The cubic root of 428535618 is about 753.9264410975.

It can be divided in two parts, 4285 and 35618, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 428535618 in words is "four hundred twenty-eight million, five hundred thirty-five thousand, six hundred eighteen".