128298071 has 16 divisors (see below), whose sum is σ = 146914560. Its totient is φ = 110901120.

The previous prime is 128298043. The next prime is 128298077. The reversal of 128298071 is 170892821.

It is not a de Polignac number, because 128298071 - 2⁶ = 128298007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128298077) 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, 43871 + ... + 46703.

It is an arithmetic number, because the mean of its divisors is an integer number (9182160).

Almost surely, 2^128298071 is an apocalyptic number.

128298071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

128298071 is a deficient number, since it is larger than the sum of its proper divisors (18616489).

128298071 is a wasteful number, since it uses less digits than its factorization.

128298071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 128298071 is about 11326.8738405617. The cubic root of 128298071 is about 504.3593103695.

The spelling of 128298071 in words is "one hundred twenty-eight million, two hundred ninety-eight thousand, seventy-one".