2915838 has 40 divisors (see below), whose sum is σ = 6708240. Its totient is φ = 946080.

The previous prime is 2915837. The next prime is 2915849. The reversal of 2915838 is 8385192.

It is a super-2 number, since 2×2915838² = 17004222484488, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2915831) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6423 + ... + 6861.

It is an arithmetic number, because the mean of its divisors is an integer number (167706).

2^2915838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2915838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3354120).

2915838 is an abundant number, since it is smaller than the sum of its proper divisors (3792402).

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

2915838 is a wasteful number, since it uses less digits than its factorization.

2915838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 485 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2915838 is about 1707.5825016672. The cubic root of 2915838 is about 142.8634489597.

The spelling of 2915838 in words is "two million, nine hundred fifteen thousand, eight hundred thirty-eight".