128814898 has 4 divisors (see below), whose sum is σ = 193222350. Its totient is φ = 64407448.

The previous prime is 128814887. The next prime is 128814901. The reversal of 128814898 is 898418821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898418821 = 1289 ⋅696989.

It can be written as a sum of positive squares in only one way, i.e., 93566929 + 35247969 = 9673^2 + 5937^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32203723 + ... + 32203726.

Almost surely, 2^128814898 is an apocalyptic number.

128814898 is a deficient number, since it is larger than the sum of its proper divisors (64407452).

128814898 is an equidigital number, since it uses as much as digits as its factorization.

128814898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64407451.

The product of its digits is 294912, while the sum is 49.

The square root of 128814898 is about 11349.6651051914. The cubic root of 128814898 is about 505.0356449695.

The spelling of 128814898 in words is "one hundred twenty-eight million, eight hundred fourteen thousand, eight hundred ninety-eight".