128216748 has 24 divisors (see below), whose sum is σ = 326370240. Its totient is φ = 38853520.

The previous prime is 128216707. The next prime is 128216779. The reversal of 128216748 is 847612821.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485538 + ... + 485801.

It is an arithmetic number, because the mean of its divisors is an integer number (13598760).

Almost surely, 2^128216748 is an apocalyptic number.

It is an amenable number.

128216748 is an abundant number, since it is smaller than the sum of its proper divisors (198153492).

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

128216748 is a wasteful number, since it uses less digits than its factorization.

128216748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971357 (or 971355 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 128216748 is about 11323.2834460681. The cubic root of 128216748 is about 504.2527234685.

The spelling of 128216748 in words is "one hundred twenty-eight million, two hundred sixteen thousand, seven hundred forty-eight".