128669682 has 32 divisors (see below), whose sum is σ = 269402112. Its totient is φ = 40891664.

The previous prime is 128669647. The next prime is 128669701. The reversal of 128669682 is 286966821.

It is a happy number.

It is a super-2 number, since 2×128669682² = 33111774131962248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46543 + ... + 49229.

It is an arithmetic number, because the mean of its divisors is an integer number (8418816).

Almost surely, 2^128669682 is an apocalyptic number.

128669682 is an abundant number, since it is smaller than the sum of its proper divisors (140732430).

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

128669682 is a wasteful number, since it uses less digits than its factorization.

128669682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062.

The product of its digits is 497664, while the sum is 48.

The square root of 128669682 is about 11343.2659318205. The cubic root of 128669682 is about 504.8457941742.

The spelling of 128669682 in words is "one hundred twenty-eight million, six hundred sixty-nine thousand, six hundred eighty-two".