128363816 has 32 divisors (see below), whose sum is σ = 278389440. Its totient is φ = 54348288.

The previous prime is 128363813. The next prime is 128363843. The reversal of 128363816 is 618363821.

It is a self number, because there is not a number n which added to its sum of digits gives 128363816.

It is not an unprimeable number, because it can be changed into a prime (128363813) 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, 9161 + ... + 18456.

It is an arithmetic number, because the mean of its divisors is an integer number (8699670).

Almost surely, 2^128363816 is an apocalyptic number.

It is an amenable number.

128363816 is an abundant number, since it is smaller than the sum of its proper divisors (150025624).

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

128363816 is a wasteful number, since it uses less digits than its factorization.

128363816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27713 (or 27709 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 128363816 is about 11329.7756376726. The cubic root of 128363816 is about 504.4454468697.

The spelling of 128363816 in words is "one hundred twenty-eight million, three hundred sixty-three thousand, eight hundred sixteen".