2720869906 has 16 divisors (see below), whose sum is σ = 4149056448. Its totient is φ = 1338030000.

The previous prime is 2720869841. The next prime is 2720869909. The reversal of 2720869906 is 6099680272.

It is a self number, because there is not a number n which added to its sum of digits gives 2720869906.

It is not an unprimeable number, because it can be changed into a prime (2720869909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14100 + ... + 75103.

It is an arithmetic number, because the mean of its divisors is an integer number (259316028).

Almost surely, 2^2720869906 is an apocalyptic number.

2720869906 is a deficient number, since it is larger than the sum of its proper divisors (1428186542).

2720869906 is a wasteful number, since it uses less digits than its factorization.

2720869906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89457.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 2720869906 is about 52161.9584179889. The cubic root of 2720869906 is about 1396.0552056969.

The spelling of 2720869906 in words is "two billion, seven hundred twenty million, eight hundred sixty-nine thousand, nine hundred six".