2102040280 has 32 divisors (see below), whose sum is σ = 4776427440. Its totient is φ = 832489600.

The previous prime is 2102040277. The next prime is 2102040301. The reversal of 2102040280 is 820402012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256114 + ... + 264193.

Almost surely, 2^2102040280 is an apocalyptic number.

2102040280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102040280 is an abundant number, since it is smaller than the sum of its proper divisors (2674387160).

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

2102040280 is a wasteful number, since it uses less digits than its factorization.

2102040280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520419 (or 520415 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2102040280 is about 45848.0128249851. The cubic root of 2102040280 is about 1280.9937513953.

Adding to 2102040280 its reverse (820402012), we get a palindrome (2922442292).

The spelling of 2102040280 in words is "two billion, one hundred two million, forty thousand, two hundred eighty".