4080240 has 80 divisors (see below), whose sum is σ = 14061600. Its totient is φ = 1087488.

The previous prime is 4080239. The next prime is 4080253. The reversal of 4080240 is 420804.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1216 + ... + 3104.

It is an arithmetic number, because the mean of its divisors is an integer number (175770).

Almost surely, 2^4080240 is an apocalyptic number.

4080240 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 4080240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7030800).

4080240 is an abundant number, since it is smaller than the sum of its proper divisors (9981360).

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

4080240 is a wasteful number, since it uses less digits than its factorization.

4080240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911 (or 1899 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4080240 is about 2019.9603956514. The cubic root of 4080240 is about 159.7945279123.

The spelling of 4080240 in words is "four million, eighty thousand, two hundred forty".