128622862 has 4 divisors (see below), whose sum is σ = 192934296. Its totient is φ = 64311430.

The previous prime is 128622829. The next prime is 128622883. The reversal of 128622862 is 268226821.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 32155714 + ... + 32155717.

It is an arithmetic number, because the mean of its divisors is an integer number (48233574).

Almost surely, 2^128622862 is an apocalyptic number.

128622862 is a deficient number, since it is larger than the sum of its proper divisors (64311434).

128622862 is an equidigital number, since it uses as much as digits as its factorization.

128622862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64311433.

The product of its digits is 36864, while the sum is 37.

The square root of 128622862 is about 11341.2019645186. The cubic root of 128622862 is about 504.7845527399.

The spelling of 128622862 in words is "one hundred twenty-eight million, six hundred twenty-two thousand, eight hundred sixty-two".