4072240 has 40 divisors (see below), whose sum is σ = 9575280. Its totient is φ = 1610496.

The previous prime is 4072223. The next prime is 4072249. The reversal of 4072240 is 422704.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (4072249) 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, 8487 + ... + 8953.

It is an arithmetic number, because the mean of its divisors is an integer number (239382).

Almost surely, 2^4072240 is an apocalyptic number.

4072240 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 4072240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4787640).

4072240 is an abundant number, since it is smaller than the sum of its proper divisors (5503040).

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

4072240 is a wasteful number, since it uses less digits than its factorization.

4072240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 4072240 is about 2017.9791872068. The cubic root of 4072240 is about 159.6900248591.

Adding to 4072240 its reverse (422704), we get a palindrome (4494944).

The spelling of 4072240 in words is "four million, seventy-two thousand, two hundred forty".