28764499201 has 9 divisors (see below), whose sum is σ = 29727751809. Its totient is φ = 27831524100.

The previous prime is 28764499193. The next prime is 28764499229. The reversal of 28764499201 is 10299446782.

The square root of 28764499201 is 169601.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 28764499201 - 2³ = 28764499193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28764499261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5254896 + ... + 5260366.

Almost surely, 2^28764499201 is an apocalyptic number.

28764499201 is the 169601-st square number.

28764499201 is the 84801-st centered octagonal number.

It is an amenable number.

28764499201 is a deficient number, since it is larger than the sum of its proper divisors (963252608).

28764499201 is an frugal number, since it uses more digits than its factorization.

28764499201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11004 (or 5502 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 28764499201 in words is "twenty-eight billion, seven hundred sixty-four million, four hundred ninety-nine thousand, two hundred one".