128066386 has 16 divisors (see below), whose sum is σ = 221221440. Its totient is φ = 54465840.

The previous prime is 128066383. The next prime is 128066387. The reversal of 128066386 is 683660821.

It is not an unprimeable number, because it can be changed into a prime (128066381) 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, 33081 + ... + 36748.

It is an arithmetic number, because the mean of its divisors is an integer number (13826340).

Almost surely, 2^128066386 is an apocalyptic number.

128066386 is a deficient number, since it is larger than the sum of its proper divisors (93155054).

128066386 is a wasteful number, since it uses less digits than its factorization.

128066386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69969.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 128066386 is about 11316.6419931003. The cubic root of 128066386 is about 504.0555310653.

The spelling of 128066386 in words is "one hundred twenty-eight million, sixty-six thousand, three hundred eighty-six".