2640382 has 4 divisors (see below), whose sum is σ = 3960576. Its totient is φ = 1320190.

The previous prime is 2640371. The next prime is 2640383. The reversal of 2640382 is 2830462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2830462 = 2 ⋅1415231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660094 + ... + 660097.

It is an arithmetic number, because the mean of its divisors is an integer number (990144).

2^2640382 is an apocalyptic number.

2640382 is a deficient number, since it is larger than the sum of its proper divisors (1320194).

2640382 is a wasteful number, since it uses less digits than its factorization.

2640382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320193.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2640382 is about 1624.9252290490. The cubic root of 2640382 is about 138.2151303941.

The spelling of 2640382 in words is "two million, six hundred forty thousand, three hundred eighty-two".