2406138 has 32 divisors (see below), whose sum is σ = 5598720. Its totient is φ = 675120.

The previous prime is 2406133. The next prime is 2406139. The reversal of 2406138 is 8316042.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2406133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1993 + ... + 2963.

It is an arithmetic number, because the mean of its divisors is an integer number (174960).

2^2406138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2406138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2799360).

2406138 is an abundant number, since it is smaller than the sum of its proper divisors (3192582).

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

2406138 is a wasteful number, since it uses less digits than its factorization.

2406138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2406138 is about 1551.1731044600. The cubic root of 2406138 is about 134.0006311695. Note that the first 3 decimals are identical.

The spelling of 2406138 in words is "two million, four hundred six thousand, one hundred thirty-eight".