2440638 has 16 divisors (see below), whose sum is σ = 5423760. Its totient is φ = 813528.

The previous prime is 2440621. The next prime is 2440643. The reversal of 2440638 is 8360442.

2440638 is a `hidden beast` number, since 24 + 4 + 0 + 638 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 22545 + ... + 22652.

It is an arithmetic number, because the mean of its divisors is an integer number (338985).

2^2440638 is an apocalyptic number.

2440638 is an abundant number, since it is smaller than the sum of its proper divisors (2983122).

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

2440638 is a wasteful number, since it uses less digits than its factorization.

2440638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45208 (or 45202 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 2440638 is about 1562.2541406570. The cubic root of 2440638 is about 134.6380427459.

The spelling of 2440638 in words is "two million, four hundred forty thousand, six hundred thirty-eight".