128995626 has 16 divisors (see below), whose sum is σ = 273167424. Its totient is φ = 40469184.

The previous prime is 128995613. The next prime is 128995631. The reversal of 128995626 is 626599821.

It is a super-4 number, since 4×128995626⁴ (a number of 34 digits) contains 4444 as substring.

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, 632230 + ... + 632433.

It is an arithmetic number, because the mean of its divisors is an integer number (17072964).

Almost surely, 2^128995626 is an apocalyptic number.

128995626 is an abundant number, since it is smaller than the sum of its proper divisors (144171798).

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

128995626 is a wasteful number, since it uses less digits than its factorization.

128995626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264685.

The product of its digits is 466560, while the sum is 48.

The square root of 128995626 is about 11357.6241353551. The cubic root of 128995626 is about 505.2717238462.

The spelling of 128995626 in words is "one hundred twenty-eight million, nine hundred ninety-five thousand, six hundred twenty-six".