128488894 has 8 divisors (see below), whose sum is σ = 192791088. Its totient is φ = 64225200.

The previous prime is 128488891. The next prime is 128488903. The reversal of 128488894 is 498884821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128488891) 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, 1119 + ... + 16069.

It is an arithmetic number, because the mean of its divisors is an integer number (24098886).

Almost surely, 2^128488894 is an apocalyptic number.

128488894 is a deficient number, since it is larger than the sum of its proper divisors (64302194).

128488894 is a wasteful number, since it uses less digits than its factorization.

128488894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19250.

The product of its digits is 1179648, while the sum is 52.

The square root of 128488894 is about 11335.2941735096. The cubic root of 128488894 is about 504.6092379528.

The spelling of 128488894 in words is "one hundred twenty-eight million, four hundred eighty-eight thousand, eight hundred ninety-four".