2438278040 has 128 divisors (see below), whose sum is σ = 6360379200. Its totient is φ = 831406080.

The previous prime is 2438278033. The next prime is 2438278049. The reversal of 2438278040 is 408728342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2438277985 and 2438278003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2438278049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3058922 + ... + 3059718.

Almost surely, 2^2438278040 is an apocalyptic number.

2438278040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2438278040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3180189600).

2438278040 is an abundant number, since it is smaller than the sum of its proper divisors (3922101160).

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

2438278040 is a wasteful number, since it uses less digits than its factorization.

2438278040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 2438278040 is about 49378.9230340233. The cubic root of 2438278040 is about 1345.9463294042.

The spelling of 2438278040 in words is "two billion, four hundred thirty-eight million, two hundred seventy-eight thousand, forty".