28728673802 has 16 divisors (see below), whose sum is σ = 44978915520. Its totient is φ = 13736043552.

The previous prime is 28728673793. The next prime is 28728673807. The reversal of 28728673802 is 20837682782.

It is a super-2 number, since 2×28728673802² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28728673807) 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, 88478 + ... + 255510.

It is an arithmetic number, because the mean of its divisors is an integer number (2811182220).

Almost surely, 2^28728673802 is an apocalyptic number.

28728673802 is a deficient number, since it is larger than the sum of its proper divisors (16250241718).

28728673802 is a wasteful number, since it uses less digits than its factorization.

28728673802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170797.

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 28728673802 in words is "twenty-eight billion, seven hundred twenty-eight million, six hundred seventy-three thousand, eight hundred two".