128836898 has 4 divisors (see below), whose sum is σ = 193255350. Its totient is φ = 64418448.

The previous prime is 128836871. The next prime is 128836907. The reversal of 128836898 is 898638821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898638821 = 619 ⋅1451759.

It can be written as a sum of positive squares in only one way, i.e., 112296409 + 16540489 = 10597^2 + 4067^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32209223 + ... + 32209226.

Almost surely, 2^128836898 is an apocalyptic number.

128836898 is a deficient number, since it is larger than the sum of its proper divisors (64418452).

128836898 is an equidigital number, since it uses as much as digits as its factorization.

128836898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64418451.

The product of its digits is 1327104, while the sum is 53.

The square root of 128836898 is about 11350.6342554062. The cubic root of 128836898 is about 505.0643946248.

The spelling of 128836898 in words is "one hundred twenty-eight million, eight hundred thirty-six thousand, eight hundred ninety-eight".