128158670 has 8 divisors (see below), whose sum is σ = 230685624. Its totient is φ = 51263464.

The previous prime is 128158663. The next prime is 128158687. The reversal of 128158670 is 76851821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6407924 + ... + 6407943.

It is an arithmetic number, because the mean of its divisors is an integer number (28835703).

Almost surely, 2^128158670 is an apocalyptic number.

128158670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128158670 is a deficient number, since it is larger than the sum of its proper divisors (102526954).

128158670 is a wasteful number, since it uses less digits than its factorization.

128158670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12815874.

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 128158670 is about 11320.7186167663. The cubic root of 128158670 is about 504.1765752972.

The spelling of 128158670 in words is "one hundred twenty-eight million, one hundred fifty-eight thousand, six hundred seventy".