2438778 has 16 divisors (see below), whose sum is σ = 4933440. Its totient is φ = 803616.

The previous prime is 2438773. The next prime is 2438791. The reversal of 2438778 is 8778342.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2438773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750 + ... + 2817.

It is an arithmetic number, because the mean of its divisors is an integer number (308340).

2^2438778 is an apocalyptic number.

2438778 is an abundant number, since it is smaller than the sum of its proper divisors (2494662).

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

2438778 is a wasteful number, since it uses less digits than its factorization.

2438778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4661.

The product of its digits is 75264, while the sum is 39.

The square root of 2438778 is about 1561.6587335266. The cubic root of 2438778 is about 134.6038316909.

The spelling of 2438778 in words is "two million, four hundred thirty-eight thousand, seven hundred seventy-eight".