128056158 has 12 divisors (see below), whose sum is σ = 277455048. Its totient is φ = 42685380.

The previous prime is 128056139. The next prime is 128056171. The reversal of 128056158 is 851650821.

128056158 is a `hidden beast` number, since 12 + 80 + 561 + 5 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3557098 + ... + 3557133.

It is an arithmetic number, because the mean of its divisors is an integer number (23121254).

Almost surely, 2^128056158 is an apocalyptic number.

128056158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

128056158 is an abundant number, since it is smaller than the sum of its proper divisors (149398890).

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

128056158 is a wasteful number, since it uses less digits than its factorization.

128056158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114239 (or 7114236 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 128056158 is about 11316.1900832391. The cubic root of 128056158 is about 504.0421119385.

The spelling of 128056158 in words is "one hundred twenty-eight million, fifty-six thousand, one hundred fifty-eight".