2102782684 has 24 divisors (see below), whose sum is σ = 3731812560. Its totient is φ = 1036632576.

The previous prime is 2102782639. The next prime is 2102782699. The reversal of 2102782684 is 4862872012.

It is a super-3 number, since 3×2102782684³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94299 + ... + 114445.

It is an arithmetic number, because the mean of its divisors is an integer number (155492190).

Almost surely, 2^2102782684 is an apocalyptic number.

It is an amenable number.

2102782684 is a deficient number, since it is larger than the sum of its proper divisors (1629029876).

2102782684 is a wasteful number, since it uses less digits than its factorization.

2102782684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20517 (or 20515 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 2102782684 is about 45856.1084698647. The cubic root of 2102782684 is about 1281.1445418686.

The spelling of 2102782684 in words is "two billion, one hundred two million, seven hundred eighty-two thousand, six hundred eighty-four".