128950712 has 32 divisors (see below), whose sum is σ = 279281520. Its totient is φ = 55165440.

The previous prime is 128950711. The next prime is 128950753. The reversal of 128950712 is 217059821.

It is a super-2 number, since 2×128950712² = 33256572250613888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128950711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41603 + ... + 44594.

Almost surely, 2^128950712 is an apocalyptic number.

It is an amenable number.

128950712 is an abundant number, since it is smaller than the sum of its proper divisors (150330808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128950712 is a wasteful number, since it uses less digits than its factorization.

128950712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86231 (or 86227 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 128950712 is about 11355.6467010910. The cubic root of 128950712 is about 505.2130748070.

The spelling of 128950712 in words is "one hundred twenty-eight million, nine hundred fifty thousand, seven hundred twelve".