128401318 has 32 divisors (see below), whose sum is σ = 209387520. Its totient is φ = 58877280.

The previous prime is 128401303. The next prime is 128401327. The reversal of 128401318 is 813104821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180748 + ... + 181456.

It is an arithmetic number, because the mean of its divisors is an integer number (6543360).

Almost surely, 2^128401318 is an apocalyptic number.

128401318 is a deficient number, since it is larger than the sum of its proper divisors (80986202).

128401318 is a wasteful number, since it uses less digits than its factorization.

128401318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 128401318 is about 11331.4305363445. The cubic root of 128401318 is about 504.4945673351.

The spelling of 128401318 in words is "one hundred twenty-eight million, four hundred one thousand, three hundred eighteen".