2728774745 has 8 divisors (see below), whose sum is σ = 3275422920. Its totient is φ = 2182424320.

The previous prime is 2728774733. The next prime is 2728774757. The reversal of 2728774745 is 5474778272.

It is an interprime number because it is at equal distance from previous prime (2728774733) and next prime (2728774757).

It can be written as a sum of positive squares in 4 ways, for example, as 906304 + 2727868441 = 952^2 + 52229^2 .

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

It is not a de Polignac number, because 2728774745 - 2¹⁰ = 2728773721 is a prime.

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, 53750 + ... + 91359.

It is an arithmetic number, because the mean of its divisors is an integer number (409427865).

Almost surely, 2^2728774745 is an apocalyptic number.

It is an amenable number.

2728774745 is a deficient number, since it is larger than the sum of its proper divisors (546648175).

2728774745 is a wasteful number, since it uses less digits than its factorization.

2728774745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148875.

The product of its digits is 6146560, while the sum is 53.

The square root of 2728774745 is about 52237.6755321291. The cubic root of 2728774745 is about 1397.4058670833.

The spelling of 2728774745 in words is "two billion, seven hundred twenty-eight million, seven hundred seventy-four thousand, seven hundred forty-five".