42228618 has 32 divisors (see below), whose sum is σ = 87230976. Its totient is φ = 13618368.

The previous prime is 42228587. The next prime is 42228679. The reversal of 42228618 is 81682224.

It is a happy number.

It is a super-3 number, since 3×42228618³ (a number of 24 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 49080 + ... + 49932.

It is an arithmetic number, because the mean of its divisors is an integer number (2725968).

Almost surely, 2^42228618 is an apocalyptic number.

42228618 is an abundant number, since it is smaller than the sum of its proper divisors (45002358).

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

42228618 is a wasteful number, since it uses less digits than its factorization.

42228618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118.

The product of its digits is 12288, while the sum is 33.

The square root of 42228618 is about 6498.3550226192. The cubic root of 42228618 is about 348.2322237822.

The spelling of 42228618 in words is "forty-two million, two hundred twenty-eight thousand, six hundred eighteen".