2640234 has 8 divisors (see below), whose sum is σ = 5280480. Its totient is φ = 880076.

The previous prime is 2640227. The next prime is 2640251. The reversal of 2640234 is 4320462.

It is a sphenic number, since it is the product of 3 distinct primes.

2640234 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2640234.

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, 220014 + ... + 220025.

It is an arithmetic number, because the mean of its divisors is an integer number (660060).

2^2640234 is an apocalyptic number.

2640234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2640234 is a wasteful number, since it uses less digits than its factorization.

2640234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440044.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2640234 is about 1624.8796878538. The cubic root of 2640234 is about 138.2125479115.

Adding to 2640234 its reverse (4320462), we get a palindrome (6960696).

The spelling of 2640234 in words is "two million, six hundred forty thousand, two hundred thirty-four".