128455298 has 20 divisors (see below), whose sum is σ = 204991710. Its totient is φ = 60370944.

The previous prime is 128455291. The next prime is 128455307. The reversal of 128455298 is 892554821.

It can be written as a sum of positive squares in 5 ways, for example, as 82391929 + 46063369 = 9077^2 + 6787^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128455291) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 166658 + ... + 167426.

Almost surely, 2^128455298 is an apocalyptic number.

128455298 is a deficient number, since it is larger than the sum of its proper divisors (76536412).

128455298 is an frugal number, since it uses more digits than its factorization.

128455298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 788 counting only the distinct ones).

The product of its digits is 230400, while the sum is 44.

The square root of 128455298 is about 11333.8121565517. The cubic root of 128455298 is about 504.5652540484.

The spelling of 128455298 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, two hundred ninety-eight".