728751378822 has 16 divisors (see below), whose sum is σ = 1543238214192. Its totient is φ = 228627883520.

The previous prime is 728751378767. The next prime is 728751378829. The reversal of 728751378822 is 228873157827.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728751378829) 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, 3572310579 + ... + 3572310782.

It is an arithmetic number, because the mean of its divisors is an integer number (96452388387).

Almost surely, 2^728751378822 is an apocalyptic number.

728751378822 is an abundant number, since it is smaller than the sum of its proper divisors (814486835370).

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

728751378822 is a wasteful number, since it uses less digits than its factorization.

728751378822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7144621383.

The product of its digits is 21073920, while the sum is 60.

The spelling of 728751378822 in words is "seven hundred twenty-eight billion, seven hundred fifty-one million, three hundred seventy-eight thousand, eight hundred twenty-two".