128258012 has 6 divisors (see below), whose sum is σ = 224451528. Its totient is φ = 64129004.

The previous prime is 128258003. The next prime is 128258029. The reversal of 128258012 is 210852821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16032248 + ... + 16032255.

It is an arithmetic number, because the mean of its divisors is an integer number (37408588).

Almost surely, 2^128258012 is an apocalyptic number.

It is an amenable number.

128258012 is a deficient number, since it is larger than the sum of its proper divisors (96193516).

128258012 is a wasteful number, since it uses less digits than its factorization.

128258012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32064507 (or 32064505 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 128258012 is about 11325.1053858231. The cubic root of 128258012 is about 504.3068122230.

The spelling of 128258012 in words is "one hundred twenty-eight million, two hundred fifty-eight thousand, twelve".