128487958 has 16 divisors (see below), whose sum is σ = 197957520. Its totient is φ = 62524000.

The previous prime is 128487949. The next prime is 128487971. The reversal of 128487958 is 859784821.

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 in 7 ways as a sum of consecutive naturals, for example, 6528 + ... + 17308.

It is an arithmetic number, because the mean of its divisors is an integer number (12372345).

Almost surely, 2^128487958 is an apocalyptic number.

128487958 is a deficient number, since it is larger than the sum of its proper divisors (69469562).

128487958 is a wasteful number, since it uses less digits than its factorization.

128487958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10943.

The product of its digits is 1290240, while the sum is 52.

The square root of 128487958 is about 11335.2528864600. The cubic root of 128487958 is about 504.6080126449.

The spelling of 128487958 in words is "one hundred twenty-eight million, four hundred eighty-seven thousand, nine hundred fifty-eight".