128250155 has 16 divisors (see below), whose sum is σ = 168908544. Its totient is φ = 92707680.

The previous prime is 128250137. The next prime is 128250217. The reversal of 128250155 is 551052821.

It is not a de Polignac number, because 128250155 - 2¹² = 128246059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2204 + ... + 16166.

It is an arithmetic number, because the mean of its divisors is an integer number (10556784).

Almost surely, 2^128250155 is an apocalyptic number.

128250155 is a deficient number, since it is larger than the sum of its proper divisors (40658389).

128250155 is a wasteful number, since it uses less digits than its factorization.

128250155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14146.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 128250155 is about 11324.7584963212. The cubic root of 128250155 is about 504.2965141801.

The spelling of 128250155 in words is "one hundred twenty-eight million, two hundred fifty thousand, one hundred fifty-five".