4206440 has 64 divisors (see below), whose sum is σ = 11007360. Its totient is φ = 1416960.

The previous prime is 4206439. The next prime is 4206443. The reversal of 4206440 is 446024.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a d-powerful number, because it can be written as 4⁴ + 2³ + 0 + 6⁵ + 4⁶ + 4¹¹ + 0 .

It is not an unprimeable number, because it can be changed into a prime (4206443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23150 + ... + 23330.

It is an arithmetic number, because the mean of its divisors is an integer number (171990).

Almost surely, 2^4206440 is an apocalyptic number.

4206440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4206440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5503680).

4206440 is an abundant number, since it is smaller than the sum of its proper divisors (6800920).

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

4206440 is a wasteful number, since it uses less digits than its factorization.

4206440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4206440 is about 2050.9607504777. The cubic root of 4206440 is about 161.4252866208.

The spelling of 4206440 in words is "four million, two hundred six thousand, four hundred forty".