128812486 has 12 divisors (see below), whose sum is σ = 212381316. Its totient is φ = 58551020.

The previous prime is 128812441. The next prime is 128812487. The reversal of 128812486 is 684218821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128812487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 265900 + ... + 266383.

It is an arithmetic number, because the mean of its divisors is an integer number (17698443).

Almost surely, 2^128812486 is an apocalyptic number.

128812486 is a deficient number, since it is larger than the sum of its proper divisors (83568830).

128812486 is a wasteful number, since it uses less digits than its factorization.

128812486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532307 (or 532296 counting only the distinct ones).

The product of its digits is 49152, while the sum is 40.

The square root of 128812486 is about 11349.5588460521. The cubic root of 128812486 is about 505.0324927627.

The spelling of 128812486 in words is "one hundred twenty-eight million, eight hundred twelve thousand, four hundred eighty-six".