4228687 has 4 divisors (see below), whose sum is σ = 4234360. Its totient is φ = 4223016.

The previous prime is 4228673. The next prime is 4228723. The reversal of 4228687 is 7868224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4228687 - 2⁷ = 4228559 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2⁵ + 2¹⁵ + 8³ + 6³ + 8³ + 7³ .

It is a Duffinian number.

4228687 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4228387) 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, 1512 + ... + 3277.

It is an arithmetic number, because the mean of its divisors is an integer number (1058590).

Almost surely, 2^4228687 is an apocalyptic number.

4228687 is a deficient number, since it is larger than the sum of its proper divisors (5673).

4228687 is an equidigital number, since it uses as much as digits as its factorization.

4228687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672.

The product of its digits is 43008, while the sum is 37.

The square root of 4228687 is about 2056.3771541232. The cubic root of 4228687 is about 161.7093681559.

The spelling of 4228687 in words is "four million, two hundred twenty-eight thousand, six hundred eighty-seven".