2643378 has 16 divisors (see below), whose sum is σ = 5329920. Its totient is φ = 873936.

The previous prime is 2643353. The next prime is 2643383. The reversal of 2643378 is 8733462.

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, 973 + ... + 2496.

It is an arithmetic number, because the mean of its divisors is an integer number (333120).

2^2643378 is an apocalyptic number.

2643378 is an abundant number, since it is smaller than the sum of its proper divisors (2686542).

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

2643378 is a wasteful number, since it uses less digits than its factorization.

2643378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601.

The product of its digits is 24192, while the sum is 33.

The square root of 2643378 is about 1625.8468562568. The cubic root of 2643378 is about 138.2673874801.

The spelling of 2643378 in words is "two million, six hundred forty-three thousand, three hundred seventy-eight".