2640038 has 4 divisors (see below), whose sum is σ = 3960060. Its totient is φ = 1320018.

The previous prime is 2640023. The next prime is 2640041. The reversal of 2640038 is 8300462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2639995 and 2640022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660008 + ... + 660011.

It is an arithmetic number, because the mean of its divisors is an integer number (990015).

2^2640038 is an apocalyptic number.

2640038 is a deficient number, since it is larger than the sum of its proper divisors (1320022).

2640038 is a wasteful number, since it uses less digits than its factorization.

2640038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320021.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2640038 is about 1624.8193745768. The cubic root of 2640038 is about 138.2091277185.

The spelling of 2640038 in words is "two million, six hundred forty thousand, thirty-eight".