128316426 has 16 divisors (see below), whose sum is σ = 293294784. Its totient is φ = 36661824.

The previous prime is 128316421. The next prime is 128316427. The reversal of 128316426 is 624613821.

It is not an unprimeable number, because it can be changed into a prime (128316421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1527535 + ... + 1527618.

It is an arithmetic number, because the mean of its divisors is an integer number (18330924).

Almost surely, 2^128316426 is an apocalyptic number.

128316426 is an abundant number, since it is smaller than the sum of its proper divisors (164978358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128316426 is a wasteful number, since it uses less digits than its factorization.

128316426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055165.

The product of its digits is 13824, while the sum is 33.

The square root of 128316426 is about 11327.6840527974. The cubic root of 128316426 is about 504.3833613253.

The spelling of 128316426 in words is "one hundred twenty-eight million, three hundred sixteen thousand, four hundred twenty-six".