28720200002 has 16 divisors (see below), whose sum is σ = 46398095352. Its totient is φ = 13254355200.

The previous prime is 28720200001. The next prime is 28720200017. The reversal of 28720200002 is 20000202782.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3165300121 + 25554899881 = 56261^2 + 159859^2 .

It is not an unprimeable number, because it can be changed into a prime (28720200001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321002 + ... + 400602.

Almost surely, 2^28720200002 is an apocalyptic number.

28720200002 is a deficient number, since it is larger than the sum of its proper divisors (17677895350).

28720200002 is a wasteful number, since it uses less digits than its factorization.

28720200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93493.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 28720200002 its reverse (20000202782), we get a palindrome (48720402784).

The spelling of 28720200002 in words is "twenty-eight billion, seven hundred twenty million, two hundred thousand, two".