2888240 has 40 divisors (see below), whose sum is σ = 6815040. Its totient is φ = 1138176.

The previous prime is 2888233. The next prime is 2888243. The reversal of 2888240 is 428882.

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

It is a junction number, because it is equal to n+sod(n) for n = 2888197 and 2888206.

It is not an unprimeable number, because it can be changed into a prime (2888243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6092 + ... + 6548.

It is an arithmetic number, because the mean of its divisors is an integer number (170376).

2^2888240 is an apocalyptic number.

2888240 is a gapful number since it is divisible by the number (20) 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 2888240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3407520).

2888240 is an abundant number, since it is smaller than the sum of its proper divisors (3926800).

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

2888240 is a wasteful number, since it uses less digits than its factorization.

2888240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 2888240 is about 1699.4822741059. The cubic root of 2888240 is about 142.4112918706.

The spelling of 2888240 in words is "two million, eight hundred eighty-eight thousand, two hundred forty".