4390240 has 48 divisors (see below), whose sum is σ = 10831968. Its totient is φ = 1678336.

The previous prime is 4390237. The next prime is 4390247. The reversal of 4390240 is 420934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4390247) 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 7 ways as a sum of consecutive naturals, for example, 3084 + ... + 4276.

It is an arithmetic number, because the mean of its divisors is an integer number (225666).

Almost surely, 2^4390240 is an apocalyptic number.

4390240 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 4390240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5415984).

4390240 is an abundant number, since it is smaller than the sum of its proper divisors (6441728).

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

4390240 is a wasteful number, since it uses less digits than its factorization.

4390240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 4390240 is about 2095.2899560681. The cubic root of 4390240 is about 163.7430041880.

The spelling of 4390240 in words is "four million, three hundred ninety thousand, two hundred forty".