2643388 has 12 divisors (see below), whose sum is σ = 5046552. Its totient is φ = 1201520.

The previous prime is 2643383. The next prime is 2643397. The reversal of 2643388 is 8833462.

2643388 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2²⁰ + 6³ + 4³ + 3⁴ + 3¹³ + 8² + 8² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643383) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 29995 + ... + 30082.

It is an arithmetic number, because the mean of its divisors is an integer number (420546).

2^2643388 is an apocalyptic number.

It is an amenable number.

2643388 is a deficient number, since it is larger than the sum of its proper divisors (2403164).

2643388 is a wasteful number, since it uses less digits than its factorization.

2643388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60092 (or 60090 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 2643388 is about 1625.8499315743. The cubic root of 2643388 is about 138.2675618368.

The spelling of 2643388 in words is "two million, six hundred forty-three thousand, three hundred eighty-eight".