128492193 has 16 divisors (see below), whose sum is σ = 183746880. Its totient is φ = 79619904.

The previous prime is 128492183. The next prime is 128492201. The reversal of 128492193 is 391294821.

It is not a de Polignac number, because 128492193 - 2²⁵ = 94937761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128492113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18246 + ... + 24287.

It is an arithmetic number, because the mean of its divisors is an integer number (11484180).

Almost surely, 2^128492193 is an apocalyptic number.

It is an amenable number.

128492193 is a deficient number, since it is larger than the sum of its proper divisors (55254687).

128492193 is a wasteful number, since it uses less digits than its factorization.

128492193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42608.

The product of its digits is 31104, while the sum is 39.

The square root of 128492193 is about 11335.4396915162. The cubic root of 128492193 is about 504.6135565923.

The spelling of 128492193 in words is "one hundred twenty-eight million, four hundred ninety-two thousand, one hundred ninety-three".