2720491885 has 16 divisors (see below), whose sum is σ = 3401838000. Its totient is φ = 2085991936.

The previous prime is 2720491871. The next prime is 2720491889. The reversal of 2720491885 is 5881940272.

2720491885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 335732329 + 2384759556 = 18323^2 + 48834^2 .

It is a cyclic number.

It is not a de Polignac number, because 2720491885 - 2⁵ = 2720491853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720491889) 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, 48610 + ... + 88339.

It is an arithmetic number, because the mean of its divisors is an integer number (212614875).

Almost surely, 2^2720491885 is an apocalyptic number.

It is an amenable number.

2720491885 is a deficient number, since it is larger than the sum of its proper divisors (681346115).

2720491885 is a wasteful number, since it uses less digits than its factorization.

2720491885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137120.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 2720491885 is about 52158.3347606114. The cubic root of 2720491885 is about 1395.9905495826.

The spelling of 2720491885 in words is "two billion, seven hundred twenty million, four hundred ninety-one thousand, eight hundred eighty-five".