2601840 has 80 divisors (see below), whose sum is σ = 8311968. Its totient is φ = 672768.

The previous prime is 2601839. The next prime is 2601847. The reversal of 2601840 is 481062.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2601847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8734 + ... + 9026.

2^2601840 is an apocalyptic number.

2601840 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 2601840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4155984).

2601840 is an abundant number, since it is smaller than the sum of its proper divisors (5710128).

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

2601840 is a wasteful number, since it uses less digits than its factorization.

2601840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2601840 is about 1613.0220085293. The cubic root of 2601840 is about 137.5393165805.

The spelling of 2601840 in words is "two million, six hundred one thousand, eight hundred forty".