8228386781 has 8 divisors (see below), whose sum is σ = 8714295744. Its totient is φ = 7753157280.

The previous prime is 8228386721. The next prime is 8228386811. The reversal of 8228386781 is 1876838228.

8228386781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8228386781 - 2³⁰ = 7154644957 is a prime.

It is a super-2 number, since 2×8228386781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8228386721) 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, 2668280 + ... + 2671361.

It is an arithmetic number, because the mean of its divisors is an integer number (1089286968).

Almost surely, 2^8228386781 is an apocalyptic number.

It is an amenable number.

8228386781 is a deficient number, since it is larger than the sum of its proper divisors (485908963).

8228386781 is a wasteful number, since it uses less digits than its factorization.

8228386781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339731.

The product of its digits is 2064384, while the sum is 53.

The square root of 8228386781 is about 90710.4557424336. The cubic root of 8228386781 is about 2018.8539377631.

The spelling of 8228386781 in words is "eight billion, two hundred twenty-eight million, three hundred eighty-six thousand, seven hundred eighty-one".