2609280 has 128 divisors (see below), whose sum is σ = 9302400. Its totient is φ = 691200.

The previous prime is 2609267. The next prime is 2609287. The reversal of 2609280 is 829062.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2609287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17205 + ... + 17355.

It is an arithmetic number, because the mean of its divisors is an integer number (72675).

2^2609280 is an apocalyptic number.

2609280 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 2609280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4651200).

2609280 is an abundant number, since it is smaller than the sum of its proper divisors (6693120).

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

2609280 is a wasteful number, since it uses less digits than its factorization.

2609280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2609280 is about 1615.3265923645. The cubic root of 2609280 is about 137.6702903899.

The spelling of 2609280 in words is "two million, six hundred nine thousand, two hundred eighty".