2049864 has 16 divisors (see below), whose sum is σ = 5124720. Its totient is φ = 683280.

The previous prime is 2049863. The next prime is 2049893. The reversal of 2049864 is 4689402.

It is not an unprimeable number, because it can be changed into a prime (2049863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42682 + ... + 42729.

It is an arithmetic number, because the mean of its divisors is an integer number (320295).

2^2049864 is an apocalyptic number.

2049864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2049864 is an abundant number, since it is smaller than the sum of its proper divisors (3074856).

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

2049864 is a wasteful number, since it uses less digits than its factorization.

2049864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85420 (or 85416 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2049864 is about 1431.7346122798. The cubic root of 2049864 is about 127.0306000210.

The spelling of 2049864 in words is "two million, forty-nine thousand, eight hundred sixty-four".