2644460 has 48 divisors (see below), whose sum is σ = 6839616. Its totient is φ = 836352.

The previous prime is 2644451. The next prime is 2644489. The reversal of 2644460 is 644462.

2644460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1094 + ... + 2546.

It is an arithmetic number, because the mean of its divisors is an integer number (142492).

2^2644460 is an apocalyptic number.

2644460 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 2644460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3419808).

2644460 is an abundant number, since it is smaller than the sum of its proper divisors (4195156).

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

2644460 is a wasteful number, since it uses less digits than its factorization.

2644460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2644460 is about 1626.1795718801. The cubic root of 2644460 is about 138.2862503272.

It can be divided in two parts, 26 and 44460, that multiplied together give a triangular number (1155960 = T₁₅₂₀).

The spelling of 2644460 in words is "two million, six hundred forty-four thousand, four hundred sixty".