2764240 has 40 divisors (see below), whose sum is σ = 6506280. Its totient is φ = 1092096.

The previous prime is 2764213. The next prime is 2764247. The reversal of 2764240 is 424672.

2764240 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 61504 + 2702736 = 248^2 + 1644^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2764247) 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, 8562 + ... + 8878.

It is an arithmetic number, because the mean of its divisors is an integer number (162657).

2^2764240 is an apocalyptic number.

2764240 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 2764240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3253140).

2764240 is an abundant number, since it is smaller than the sum of its proper divisors (3742040).

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

2764240 is a wasteful number, since it uses less digits than its factorization.

2764240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 2764240 is about 1662.6003729099. The cubic root of 2764240 is about 140.3433748110.

The spelling of 2764240 in words is "two million, seven hundred sixty-four thousand, two hundred forty".