2640284 has 6 divisors (see below), whose sum is σ = 4620504. Its totient is φ = 1320140.

The previous prime is 2640271. The next prime is 2640289. The reversal of 2640284 is 4820462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330032 + ... + 330039.

It is an arithmetic number, because the mean of its divisors is an integer number (770084).

2^2640284 is an apocalyptic number.

It is an amenable number.

2640284 is a deficient number, since it is larger than the sum of its proper divisors (1980220).

2640284 is a wasteful number, since it uses less digits than its factorization.

2640284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660075 (or 660073 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 2640284 is about 1624.8950735355. The cubic root of 2640284 is about 138.2134203826.

The spelling of 2640284 in words is "two million, six hundred forty thousand, two hundred eighty-four".