4218738 has 8 divisors (see below), whose sum is σ = 8437488. Its totient is φ = 1406244.

The previous prime is 4218733. The next prime is 4218751. The reversal of 4218738 is 8378124.

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

4218738 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 4218699 and 4218708.

It is not an unprimeable number, because it can be changed into a prime (4218733) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 351556 + ... + 351567.

It is an arithmetic number, because the mean of its divisors is an integer number (1054686).

Almost surely, 2^4218738 is an apocalyptic number.

4218738 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.

4218738 is a wasteful number, since it uses less digits than its factorization.

4218738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703128.

The product of its digits is 10752, while the sum is 33.

The square root of 4218738 is about 2053.9566694553. The cubic root of 4218738 is about 161.5824485480.

The spelling of 4218738 in words is "four million, two hundred eighteen thousand, seven hundred thirty-eight".