2644464 has 40 divisors (see below), whose sum is σ = 7020880. Its totient is φ = 857088.

The previous prime is 2644451. The next prime is 2644489. The reversal of 2644464 is 4644462.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032 + ... + 2520.

It is an arithmetic number, because the mean of its divisors is an integer number (175522).

2^2644464 is an apocalyptic number.

2644464 is a gapful number since it is divisible by the number (24) 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 2644464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3510440).

2644464 is an abundant number, since it is smaller than the sum of its proper divisors (4376416).

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

2644464 is a wasteful number, since it uses less digits than its factorization.

2644464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537 (or 1531 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 2644464 is about 1626.1808017561. The cubic root of 2644464 is about 138.2863200509.

The spelling of 2644464 in words is "two million, six hundred forty-four thousand, four hundred sixty-four".