2642390 has 16 divisors (see below), whose sum is σ = 4793040. Its totient is φ = 1048800.

The previous prime is 2642389. The next prime is 2642449. The reversal of 2642390 is 932462.

It is a Curzon number.

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, 440 + ... + 2340.

It is an arithmetic number, because the mean of its divisors is an integer number (299565).

2^2642390 is an apocalyptic number.

2642390 is a deficient number, since it is larger than the sum of its proper divisors (2150650).

2642390 is a wasteful number, since it uses less digits than its factorization.

2642390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2642390 is about 1625.5429862049. The cubic root of 2642390 is about 138.2501588680.

The spelling of 2642390 in words is "two million, six hundred forty-two thousand, three hundred ninety".