2728758566 has 8 divisors (see below), whose sum is σ = 4098018960. Its totient is φ = 1362752248.

The previous prime is 2728758563. The next prime is 2728758577. The reversal of 2728758566 is 6658578272.

It is a happy number.

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

It is a super-2 number, since 2×2728758566² = 14892246623036752712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728758563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811421 + ... + 814776.

It is an arithmetic number, because the mean of its divisors is an integer number (512252370).

Almost surely, 2^2728758566 is an apocalyptic number.

2728758566 is a deficient number, since it is larger than the sum of its proper divisors (1369260394).

2728758566 is a wasteful number, since it uses less digits than its factorization.

2728758566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627038.

The product of its digits is 11289600, while the sum is 56.

The square root of 2728758566 is about 52237.5206724056. The cubic root of 2728758566 is about 1397.4031053219.

The spelling of 2728758566 in words is "two billion, seven hundred twenty-eight million, seven hundred fifty-eight thousand, five hundred sixty-six".