2728636032 has 64 divisors (see below), whose sum is σ = 7257952800. Its totient is φ = 908289024.

The previous prime is 2728636019. The next prime is 2728636049. The reversal of 2728636032 is 2306368272.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297694 + ... + 306722.

Almost surely, 2^2728636032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2728636032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3628976400).

2728636032 is an abundant number, since it is smaller than the sum of its proper divisors (4529316768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2728636032 is an equidigital number, since it uses as much as digits as its factorization.

2728636032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9833 (or 9821 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 2728636032 is about 52236.3478049528. The cubic root of 2728636032 is about 1397.3821883675.

The spelling of 2728636032 in words is "two billion, seven hundred twenty-eight million, six hundred thirty-six thousand, thirty-two".