2728623633 has 4 divisors (see below), whose sum is σ = 3638164848. Its totient is φ = 1819082420.

The previous prime is 2728623613. The next prime is 2728623661. The reversal of 2728623633 is 3363268272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2728623633 - 2¹⁴ = 2728607249 is a prime.

It is a super-2 number, since 2×2728623633² = 14890773861132237378, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2728623613) 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, 454770603 + ... + 454770608.

It is an arithmetic number, because the mean of its divisors is an integer number (909541212).

Almost surely, 2^2728623633 is an apocalyptic number.

It is an amenable number.

2728623633 is a deficient number, since it is larger than the sum of its proper divisors (909541215).

2728623633 is an equidigital number, since it uses as much as digits as its factorization.

2728623633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909541214.

The product of its digits is 435456, while the sum is 42.

The square root of 2728623633 is about 52236.2291230904. The cubic root of 2728623633 is about 1397.3800717828.

The spelling of 2728623633 in words is "two billion, seven hundred twenty-eight million, six hundred twenty-three thousand, six hundred thirty-three".