128017390 has 16 divisors (see below), whose sum is σ = 230564880. Its totient is φ = 51177280.

The previous prime is 128017363. The next prime is 128017391. The reversal of 128017390 is 93710821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128017391) 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, 24945 + ... + 29635.

It is an arithmetic number, because the mean of its divisors is an integer number (14410305).

Almost surely, 2^128017390 is an apocalyptic number.

128017390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128017390 is a deficient number, since it is larger than the sum of its proper divisors (102547490).

128017390 is a wasteful number, since it uses less digits than its factorization.

128017390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7427.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 128017390 is about 11314.4770095661. The cubic root of 128017390 is about 503.9912418693.

The spelling of 128017390 in words is "one hundred twenty-eight million, seventeen thousand, three hundred ninety".