128072012 has 12 divisors (see below), whose sum is σ = 224544096. Its totient is φ = 63916560.

The previous prime is 128071991. The next prime is 128072023. The reversal of 128072012 is 210270821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27428 + ... + 31755.

It is an arithmetic number, because the mean of its divisors is an integer number (18712008).

Almost surely, 2^128072012 is an apocalyptic number.

It is an amenable number.

128072012 is a deficient number, since it is larger than the sum of its proper divisors (96472084).

128072012 is a wasteful number, since it uses less digits than its factorization.

128072012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59728 (or 59726 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 128072012 is about 11316.8905623409. The cubic root of 128072012 is about 504.0629120677.

The spelling of 128072012 in words is "one hundred twenty-eight million, seventy-two thousand, twelve".