128806810 has 16 divisors (see below), whose sum is σ = 252929952. Its totient is φ = 46838800.

The previous prime is 128806793. The next prime is 128806813. The reversal of 128806810 is 18608821.

It is a super-2 number, since 2×128806810² = 33182388604752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128806813) 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, 585376 + ... + 585595.

It is an arithmetic number, because the mean of its divisors is an integer number (15808122).

Almost surely, 2^128806810 is an apocalyptic number.

128806810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128806810 is a deficient number, since it is larger than the sum of its proper divisors (124123142).

128806810 is a wasteful number, since it uses less digits than its factorization.

128806810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170989.

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 128806810 is about 11349.3087895255. The cubic root of 128806810 is about 505.0250747279.

The spelling of 128806810 in words is "one hundred twenty-eight million, eight hundred six thousand, eight hundred ten".