128284454 has 8 divisors (see below), whose sum is σ = 192588960. Its totient is φ = 64088136.

The previous prime is 128284451. The next prime is 128284463. The reversal of 128284454 is 454482821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×128284454³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128284451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24014 + ... + 28865.

It is an arithmetic number, because the mean of its divisors is an integer number (24073620).

Almost surely, 2^128284454 is an apocalyptic number.

128284454 is a deficient number, since it is larger than the sum of its proper divisors (64304506).

128284454 is a wasteful number, since it uses less digits than its factorization.

128284454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54094.

The product of its digits is 81920, while the sum is 38.

The square root of 128284454 is about 11326.2727320156. The cubic root of 128284454 is about 504.3414662360.

The spelling of 128284454 in words is "one hundred twenty-eight million, two hundred eighty-four thousand, four hundred fifty-four".