2720887145 has 8 divisors (see below), whose sum is σ = 3457127304. Its totient is φ = 2048667904.

The previous prime is 2720887123. The next prime is 2720887163. The reversal of 2720887145 is 5417880272.

It can be written as a sum of positive squares in 4 ways, for example, as 1042837849 + 1678049296 = 32293^2 + 40964^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2720887145 - 2¹⁰ = 2720886121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2720887096 and 2720887105.

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, 16005134 + ... + 16005303.

It is an arithmetic number, because the mean of its divisors is an integer number (432140913).

Almost surely, 2^2720887145 is an apocalyptic number.

It is an amenable number.

2720887145 is a deficient number, since it is larger than the sum of its proper divisors (736240159).

2720887145 is a wasteful number, since it uses less digits than its factorization.

2720887145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32010459.

The product of its (nonzero) digits is 250880, while the sum is 44.

The square root of 2720887145 is about 52162.1236626731. The cubic root of 2720887145 is about 1396.0581540854.

The spelling of 2720887145 in words is "two billion, seven hundred twenty million, eight hundred eighty-seven thousand, one hundred forty-five".