4218736 has 40 divisors (see below), whose sum is σ = 8593200. Its totient is φ = 2004480.

The previous prime is 4218733. The next prime is 4218751. The reversal of 4218736 is 6378124.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4218698 and 4218707.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38650 + ... + 38758.

It is an arithmetic number, because the mean of its divisors is an integer number (214830).

Almost surely, 2^4218736 is an apocalyptic number.

It is an amenable number.

4218736 is an abundant number, since it is smaller than the sum of its proper divisors (4374464).

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

4218736 is a wasteful number, since it uses less digits than its factorization.

4218736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 211 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 4218736 is about 2053.9561825901. The cubic root of 4218736 is about 161.5824230139.

The spelling of 4218736 in words is "four million, two hundred eighteen thousand, seven hundred thirty-six".