128223654 has 16 divisors (see below), whose sum is σ = 276174192. Its totient is φ = 39453408.

The previous prime is 128223653. The next prime is 128223679. The reversal of 128223654 is 456322821.

It is a super-2 number, since 2×128223654² = 32882610890223432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128223653) by changing a digit.

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, 821869 + ... + 822024.

It is an arithmetic number, because the mean of its divisors is an integer number (17260887).

Almost surely, 2^128223654 is an apocalyptic number.

128223654 is an abundant number, since it is smaller than the sum of its proper divisors (147950538).

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

128223654 is a wasteful number, since it uses less digits than its factorization.

128223654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643911.

The product of its digits is 23040, while the sum is 33.

The square root of 128223654 is about 11323.5883888456. The cubic root of 128223654 is about 504.2617766456.

The spelling of 128223654 in words is "one hundred twenty-eight million, two hundred twenty-three thousand, six hundred fifty-four".