4423518 has 48 divisors (see below), whose sum is σ = 10820880. Its totient is φ = 1338480.

The previous prime is 4423511. The next prime is 4423543. The reversal of 4423518 is 8153244.

It is a super-2 number, since 2×4423518² = 39135022992648, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4423491 and 4423500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4423511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6196 + ... + 6872.

It is an arithmetic number, because the mean of its divisors is an integer number (225435).

Almost surely, 2^4423518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4423518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5410440).

4423518 is an abundant number, since it is smaller than the sum of its proper divisors (6397362).

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

4423518 is a wasteful number, since it uses less digits than its factorization.

4423518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 693 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 4423518 is about 2103.2161087249. The cubic root of 4423518 is about 164.1556869784.

It can be divided in two parts, 44235 and 18, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 4423518 in words is "four million, four hundred twenty-three thousand, five hundred eighteen".