2645448 has 64 divisors (see below), whose sum is σ = 7291200. Its totient is φ = 794880.

The previous prime is 2645431. The next prime is 2645453. The reversal of 2645448 is 8445462.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18963 + ... + 19101.

It is an arithmetic number, because the mean of its divisors is an integer number (113925).

2^2645448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2645448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3645600).

2645448 is an abundant number, since it is smaller than the sum of its proper divisors (4645752).

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

2645448 is a wasteful number, since it uses less digits than its factorization.

2645448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 218 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 2645448 is about 1626.4833230009. The cubic root of 2645448 is about 138.3034699491.

The spelling of 2645448 in words is "two million, six hundred forty-five thousand, four hundred forty-eight".