2591904 has 144 divisors (see below), whose sum is σ = 8618400. Its totient is φ = 677376.

The previous prime is 2591899. The next prime is 2591917. The reversal of 2591904 is 4091952.

2591904 = T₂₅₂ + T₂₅₃ + ... + T₃₁₅.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89362 + ... + 89390.

It is an arithmetic number, because the mean of its divisors is an integer number (59850).

2^2591904 is an apocalyptic number.

2591904 is a gapful number since it is divisible by the number (24) 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 2591904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4309200).

2591904 is an abundant number, since it is smaller than the sum of its proper divisors (6026496).

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

2591904 is a wasteful number, since it uses less digits than its factorization.

2591904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2591904 is about 1609.9391292841. The cubic root of 2591904 is about 137.3640132125.

The spelling of 2591904 in words is "two million, five hundred ninety-one thousand, nine hundred four".