1428618 has 8 divisors (see below), whose sum is σ = 2857248. Its totient is φ = 476204.

The previous prime is 1428613. The next prime is 1428631. The reversal of 1428618 is 8168241.

It is a sphenic number, since it is the product of 3 distinct primes.

1428618 is an admirable number.

It is a super-3 number, since 3×1428618³ = 8747211106603335096, which contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1428613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119046 + ... + 119057.

It is an arithmetic number, because the mean of its divisors is an integer number (357156).

2^1428618 is an apocalyptic number.

1428618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1428618 is a wasteful number, since it uses less digits than its factorization.

1428618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238108.

The product of its digits is 3072, while the sum is 30.

The square root of 1428618 is about 1195.2480914019. The cubic root of 1428618 is about 112.6260118871.

The spelling of 1428618 in words is "one million, four hundred twenty-eight thousand, six hundred eighteen".