2058640 has 20 divisors (see below), whose sum is σ = 4786524. Its totient is φ = 823424.

The previous prime is 2058629. The next prime is 2058653. The reversal of 2058640 is 468502.

It can be written as a sum of positive squares in 2 ways, for example, as 389376 + 1669264 = 624^2 + 1292^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

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, 12787 + ... + 12946.

2^2058640 is an apocalyptic number.

2058640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2058640 is an abundant number, since it is smaller than the sum of its proper divisors (2727884).

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

2058640 is a wasteful number, since it uses less digits than its factorization.

2058640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25746 (or 25740 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2058640 is about 1434.7961527687. The cubic root of 2058640 is about 127.2116255872.

The spelling of 2058640 in words is "two million, fifty-eight thousand, six hundred forty".