128263814 has 16 divisors (see below), whose sum is σ = 221829408. Its totient is φ = 54483072.

The previous prime is 128263783. The next prime is 128263859. The reversal of 128263814 is 418362821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38957 + ... + 42120.

It is an arithmetic number, because the mean of its divisors is an integer number (13864338).

Almost surely, 2^128263814 is an apocalyptic number.

128263814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128263814 is a deficient number, since it is larger than the sum of its proper divisors (93565594).

128263814 is a wasteful number, since it uses less digits than its factorization.

128263814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81199.

The product of its digits is 18432, while the sum is 35.

The square root of 128263814 is about 11325.3615394830. The cubic root of 128263814 is about 504.3144165407.

The spelling of 128263814 in words is "one hundred twenty-eight million, two hundred sixty-three thousand, eight hundred fourteen".