128323454 has 24 divisors (see below), whose sum is σ = 235699560. Its totient is φ = 52100496.

The previous prime is 128323439. The next prime is 128323469. The reversal of 128323454 is 454323821.

It is an interprime number because it is at equal distance from previous prime (128323439) and next prime (128323469).

It is a self number, because there is not a number n which added to its sum of digits gives 128323454.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32597 + ... + 36320.

It is an arithmetic number, because the mean of its divisors is an integer number (9820815).

Almost surely, 2^128323454 is an apocalyptic number.

128323454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128323454 is a deficient number, since it is larger than the sum of its proper divisors (107376106).

128323454 is a wasteful number, since it uses less digits than its factorization.

128323454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68952 (or 68945 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 128323454 is about 11327.9942620042. The cubic root of 128323454 is about 504.3925696593.

The spelling of 128323454 in words is "one hundred twenty-eight million, three hundred twenty-three thousand, four hundred fifty-four".