2040646420 has 48 divisors (see below), whose sum is σ = 4398999696. Its totient is φ = 794880000.

The previous prime is 2040646397. The next prime is 2040646427. The reversal of 2040646420 is 246460402.

It can be written as a sum of positive squares in 8 ways, for example, as 264192516 + 1776453904 = 16254^2 + 42148^2 .

It is a super-2 number, since 2×2040646420² = 8328475622917632800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040646427) 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, 114940 + ... + 131500.

It is an arithmetic number, because the mean of its divisors is an integer number (91645827).

Almost surely, 2^2040646420 is an apocalyptic number.

2040646420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2040646420 is an abundant number, since it is smaller than the sum of its proper divisors (2358353276).

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

2040646420 is a wasteful number, since it uses less digits than its factorization.

2040646420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16732 (or 16730 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 2040646420 is about 45173.5145854294. The cubic root of 2040646420 is about 1268.3990863995.

The spelling of 2040646420 in words is "two billion, forty million, six hundred forty-six thousand, four hundred twenty".