128863306 has 24 divisors (see below), whose sum is σ = 228813732. Its totient is φ = 54067200.

The previous prime is 128863297. The next prime is 128863309. The reversal of 128863306 is 603368821.

It can be written as a sum of positive squares in 2 ways, for example, as 128618281 + 245025 = 11341^2 + 495^2 .

It is not an unprimeable number, because it can be changed into a prime (128863309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17335 + ... + 23626.

Almost surely, 2^128863306 is an apocalyptic number.

128863306 is a deficient number, since it is larger than the sum of its proper divisors (99950426).

128863306 is a wasteful number, since it uses less digits than its factorization.

128863306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40998 (or 40987 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 128863306 is about 11351.7974788137. The cubic root of 128863306 is about 505.0989003436.

The spelling of 128863306 in words is "one hundred twenty-eight million, eight hundred sixty-three thousand, three hundred six".