8228645540 has 12 divisors (see below), whose sum is σ = 17280155676. Its totient is φ = 3291458208.

The previous prime is 8228645527. The next prime is 8228645561. The reversal of 8228645540 is 455468228.

It can be written as a sum of positive squares in 2 ways, for example, as 3363304036 + 4865341504 = 57994^2 + 69752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8228645491 and 8228645500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205716119 + ... + 205716158.

It is an arithmetic number, because the mean of its divisors is an integer number (1440012973).

Almost surely, 2^8228645540 is an apocalyptic number.

It is an amenable number.

8228645540 is an abundant number, since it is smaller than the sum of its proper divisors (9051510136).

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

8228645540 is a wasteful number, since it uses less digits than its factorization.

8228645540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411432286 (or 411432284 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 44.

The square root of 8228645540 is about 90711.8820221475. The cubic root of 8228645540 is about 2018.8750999165.

The spelling of 8228645540 in words is "eight billion, two hundred twenty-eight million, six hundred forty-five thousand, five hundred forty".