128894068 has 12 divisors (see below), whose sum is σ = 238833252. Its totient is φ = 60656000.

The previous prime is 128894057. The next prime is 128894071. The reversal of 128894068 is 860498821.

It can be written as a sum of positive squares in 2 ways, for example, as 97061904 + 31832164 = 9852^2 + 5642^2 .

It is a super-2 number, since 2×128894068² = 33227361531177248, which contains 22 as substring.

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, 947683 + ... + 947818.

It is an arithmetic number, because the mean of its divisors is an integer number (19902771).

Almost surely, 2^128894068 is an apocalyptic number.

It is an amenable number.

128894068 is a deficient number, since it is larger than the sum of its proper divisors (109939184).

128894068 is a wasteful number, since it uses less digits than its factorization.

128894068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895522 (or 1895520 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 128894068 is about 11353.1523375669. The cubic root of 128894068 is about 505.1390892245.

The spelling of 128894068 in words is "one hundred twenty-eight million, eight hundred ninety-four thousand, sixty-eight".