2661328 has 20 divisors (see below), whose sum is σ = 5267520. Its totient is φ = 1301984.

The previous prime is 2661317. The next prime is 2661331. The reversal of 2661328 is 8231662.

It is a junction number, because it is equal to n+sod(n) for n = 2661296 and 2661305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018 + ... + 2521.

It is an arithmetic number, because the mean of its divisors is an integer number (263376).

2^2661328 is an apocalyptic number.

It is an amenable number.

2661328 is a deficient number, since it is larger than the sum of its proper divisors (2606192).

2661328 is a wasteful number, since it uses less digits than its factorization.

2661328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 3588 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 2661328 is about 1631.3577167501. The cubic root of 2661328 is about 138.5796524278.

The spelling of 2661328 in words is "two million, six hundred sixty-one thousand, three hundred twenty-eight".