2841840 has 60 divisors (see below), whose sum is σ = 9546264. Its totient is φ = 757632.

The previous prime is 2841823. The next prime is 2841847. The reversal of 2841840 is 481482.

It is a tau number, because it is divible by the number of its divisors (60).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2841847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1254 + ... + 2693.

2^2841840 is an apocalyptic number.

2841840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2841840 is an abundant number, since it is smaller than the sum of its proper divisors (6704424).

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

2841840 is a wasteful number, since it uses less digits than its factorization.

2841840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966 (or 3957 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 2841840 is about 1685.7757858031. The cubic root of 2841840 is about 141.6445517190.

The spelling of 2841840 in words is "two million, eight hundred forty-one thousand, eight hundred forty".