128598099 has 48 divisors (see below), whose sum is σ = 215268480. Its totient is φ = 67858560.

The previous prime is 128598097. The next prime is 128598103. The reversal of 128598099 is 990895821.

It is not a de Polignac number, because 128598099 - 2¹ = 128598097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128598097) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113952 + ... + 115074.

It is an arithmetic number, because the mean of its divisors is an integer number (4484760).

Almost surely, 2^128598099 is an apocalyptic number.

128598099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

128598099 is a deficient number, since it is larger than the sum of its proper divisors (86670381).

128598099 is a wasteful number, since it uses less digits than its factorization.

128598099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1193 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 51.

The square root of 128598099 is about 11340.1101846499. The cubic root of 128598099 is about 504.7521562645.

The spelling of 128598099 in words is "one hundred twenty-eight million, five hundred ninety-eight thousand, ninety-nine".