2438540 has 48 divisors (see below), whose sum is σ = 5630688. Its totient is φ = 881664.

The previous prime is 2438537. The next prime is 2438563. The reversal of 2438540 is 458342.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21524 + ... + 21636.

It is an arithmetic number, because the mean of its divisors is an integer number (117306).

2^2438540 is an apocalyptic number.

2438540 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 2438540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2815344).

2438540 is an abundant number, since it is smaller than the sum of its proper divisors (3192148).

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

2438540 is a wasteful number, since it uses less digits than its factorization.

2438540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2438540 is about 1561.5825306400. The cubic root of 2438540 is about 134.5994528922.

The spelling of 2438540 in words is "two million, four hundred thirty-eight thousand, five hundred forty".